build: remove the AUDIO_SUPPORT and DISPLAY_SUPPORT symbols

Nothing tests either symbol any more. AUDIO_SUPPORT was also selected by
PCI_SUPPORT and USB_SUPPORT, which stood for "a sound card could be
plugged in here": audio hardware sits behind MMC, SPI, a Bluetooth UART
or an SoC PCM block just as often, so the inference never held. The
display feature was derived from a literal CONFIG_VGA_CONSOLE or CONFIG_FB
in a kernel fragment, which misses every target whose fbdev came from DRM
emulation.

Delete both symbols, the two selects, the feature translations and the
derivation.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

Author: dangowrt

config/Config-build.in

@@ -103,9 +103,6 @@ menu "Global build settings"
 		  you can use this config option to enable it
 
 
-	config DISPLAY_SUPPORT
-		bool "Show packages that require graphics support (local or remote)"
-
 	config BUILD_PATENTED
 		bool "Compile with support for patented functionality"
 		help

include/target.mk

@@ -327,9 +327,6 @@ ifeq ($(DUMP),1)
     ifneq ($(CONFIG_PCMCIA)$(CONFIG_PCCARD),)
       FEATURES += pcmcia
     endif
-    ifneq ($(CONFIG_VGA_CONSOLE)$(CONFIG_FB),)
-      FEATURES += display
-    endif
     ifneq ($(CONFIG_RTC_CLASS),)
       FEATURES += rtc
     endif

scripts/target-metadata.pl

@@ -10,11 +10,9 @@ (@)
 
 	while ($_ = shift @_) {
 		/^arm_v(\w+)$/ and $ret .= "\tselect arm_v$1\n";
-		/^audio$/ and $ret .= "\tselect AUDIO_SUPPORT\n";
 		/^boot-part$/ and $ret .= "\tselect USES_BOOT_PART\n";
 		/^broken$/ and $ret .= "\tdepends on BROKEN\n";
 		/^cpiogz$/ and $ret .= "\tselect USES_CPIOGZ\n";
-		/^display$/ and $ret .= "\tselect DISPLAY_SUPPORT\n";
 		/^dt$/ and $ret .= "\tselect USES_DEVICETREE\n";
 		/^dt-overlay$/ and $ret .= "\tselect HAS_DT_OVERLAY_SUPPORT\n";
 		/^emmc$/ and $ret .= "\tselect EMMC_SUPPORT\n";

target/Config.in

@@ -16,14 +16,10 @@ config HAS_FPU
 config HAS_DT_OVERLAY_SUPPORT
 	bool
 
-config AUDIO_SUPPORT
-	bool
-
 config GPIO_SUPPORT
 	bool
 
 config PCI_SUPPORT
-	select AUDIO_SUPPORT
 	bool
 
 config PCIE_SUPPORT
@@ -39,7 +35,6 @@ config PWM_SUPPORT
 	bool
 
 config USB_SUPPORT
-	select AUDIO_SUPPORT
 	bool
 
 config USB_GADGET_SUPPORT