rockchip64: remove patch to fix rockpi-e gigabit eth

[paolosabatino]

Description

Radxa Rockpi E gigabit ethenet does not work in current 6.12 kernel.
This PR removes a patch that declares the GbE phy with compatible = "ethernet-phy-id001c.c916", which does in turn acquire a gpio interrupt line which is not supposed to be controller by the phy itself.

This mistake causes the kernel to disable the IRQ after 100000 triggers because the phy driver - obviously - does not detect any activity and prints this stack dump:

[   70.122947] irq 47: nobody cared (try booting with the "irqpoll" option)
[   70.122967] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G         C         6.6.51-current-rockchip64 #1
[   70.122976] Hardware name: Radxa ROCK Pi E (DT)
[   70.122981] Call trace:
[   70.122985]  dump_backtrace+0x94/0x114
[   70.122999]  show_stack+0x18/0x24
[   70.123006]  dump_stack_lvl+0x48/0x60
[   70.123015]  dump_stack+0x18/0x24
[   70.123023]  __report_bad_irq+0x38/0xe0
[   70.123033]  note_interrupt+0x330/0x390
[   70.123040]  handle_irq_event+0x9c/0xb0
[   70.123047]  handle_level_irq+0xc0/0x1b0
[   70.123055]  generic_handle_domain_irq+0x2c/0x44
[   70.123062]  rockchip_irq_demux+0xa0/0x220
[   70.123073]  generic_handle_domain_irq+0x2c/0x44
[   70.123079]  gic_handle_irq+0x44/0xcc
[   70.123085]  call_on_irq_stack+0x24/0x4c
[   70.123093]  do_interrupt_handler+0x80/0x84
[   70.123102]  el1_interrupt+0x34/0x68
[   70.123111]  el1h_64_irq_handler+0x18/0x24
[   70.123120]  el1h_64_irq+0x64/0x68
[   70.123126]  cpuidle_enter_state+0xc4/0x4bc
[   70.123133]  cpuidle_enter+0x38/0x50
[   70.123141]  do_idle+0x1fc/0x270
[   70.123150]  cpu_startup_entry+0x38/0x3c
[   70.123157]  kernel_init+0x0/0x1e8
[   70.123163]  arch_post_acpi_subsys_init+0x0/0x8
[   70.123172]  start_kernel+0x6d4/0x90c
[   70.123179]  __primary_switched+0xbc/0xc4
[   70.123188] handlers:
[   70.123191] [<000000006796ecba>] irq_default_primary_handler threaded [<00000000ed96dea9>] phy_interrupt
[   70.123212] Disabling IRQ #47

GitHub issue reference:
Jira reference number AR-2610

How Has This Been Tested?

• Device tree has been rebuilt and tested on a live installatiion
• Performance tests show acceptable bandwidth:

root@rockpi-e:/boot/dtb/rockchip# iperf3 -c 192.168.1.12
Connecting to host 192.168.1.12, port 5201
[  5] local 192.168.1.43 port 42876 connected to 192.168.1.12 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   114 MBytes   954 Mbits/sec    0   1.49 MBytes       
[  5]   1.00-2.00   sec   111 MBytes   935 Mbits/sec    0   1.49 MBytes       
[  5]   2.00-3.00   sec   112 MBytes   944 Mbits/sec    0   1.49 MBytes       
[  5]   3.00-4.00   sec   112 MBytes   944 Mbits/sec    0   1.49 MBytes       
[  5]   4.00-5.00   sec   112 MBytes   944 Mbits/sec    0   1.49 MBytes       
[  5]   5.00-6.00   sec   111 MBytes   933 Mbits/sec    0   1.49 MBytes       
[  5]   6.00-7.00   sec   112 MBytes   944 Mbits/sec    0   1.49 MBytes       
[  5]   7.00-8.00   sec   112 MBytes   944 Mbits/sec    0   1.49 MBytes       
[  5]   8.00-9.00   sec   112 MBytes   944 Mbits/sec    0   1.49 MBytes       
[  5]   9.00-10.00  sec   112 MBytes   943 Mbits/sec    0   1.49 MBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.10 GBytes   943 Mbits/sec    0             sender
[  5]   0.00-10.01  sec  1.09 GBytes   939 Mbits/sec                  receiver

iperf Done.
root@rockpi-e:/boot/dtb/rockchip# iperf3 -c 192.168.1.12 -R
Connecting to host 192.168.1.12, port 5201
Reverse mode, remote host 192.168.1.12 is sending
[  5] local 192.168.1.43 port 37404 connected to 192.168.1.12 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec   112 MBytes   941 Mbits/sec                  
[  5]   1.00-2.00   sec   112 MBytes   941 Mbits/sec                  
[  5]   2.00-3.00   sec   112 MBytes   941 Mbits/sec                  
[  5]   3.00-4.00   sec   112 MBytes   942 Mbits/sec                  
[  5]   4.00-5.00   sec   112 MBytes   941 Mbits/sec                  
[  5]   5.00-6.00   sec   112 MBytes   942 Mbits/sec                  
[  5]   6.00-7.00   sec   112 MBytes   941 Mbits/sec                  
[  5]   7.00-8.00   sec   112 MBytes   942 Mbits/sec                  
[  5]   8.00-9.00   sec   112 MBytes   942 Mbits/sec                  
[  5]   9.00-10.00  sec   112 MBytes   941 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.10 GBytes   943 Mbits/sec    0             sender
[  5]   0.00-10.00  sec  1.10 GBytes   941 Mbits/sec                  receiver

iperf Done.

Checklist:

• My changes generate no new warnings