package/rtl8812au-aircrack-ng: fix build failure due to double defined endianness

By default package rtl8812au-aircrack-ng uses CONFIG_PLATFORM_I386_PC that
define -DCONFIG_LITTLE_ENDIAN and this can't be overridden since the
USER_EXTRA_CFLAGS are assigned to EXTRA_CFLAGS in the beginning of Makefile
while -DCONFIG_LITTLE_ENDIAN is assigned later.
Instead of using the default CONFIG_PLATFORM_I386_PC let's set it to 'n'
and let's use the same defines it uses:
-DCONFIG_IOCTL_CFG80211
-DRTW_USE_CFG80211_STA_EVENT
This way -DCONFIG_BIG_ENDIAN can be define without the conflict of being
defined with with the default -DCONFIG_LITTLE_ENDIAN.
Let's also add Linux config FIXUPS to build the module correctly.

Fixes:
http://autobuild.buildroot.net/results/2e4ee705d0e2b728f102aac4e6729f11ef22be36/

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/rtl8812au-aircrack-ng/rtl8812au-aircrack-ng.mk

@@ -11,14 +11,25 @@ RTL8812AU_AIRCRACK_NG_LICENSE_FILES = LICENSE
 
 RTL8812AU_AIRCRACK_NG_EXTRA_CFLAGS = \
 	-DCONFIG_$(call qstrip,$(BR2_ENDIAN))_ENDIAN \
+	-DCONFIG_IOCTL_CFG80211 \
+	-DRTW_USE_CFG80211_STA_EVENT \
 	-Wno-error=address \
 	-Wno-error=array-bounds \
 	-Wno-error=cast-function-type
 
 RTL8812AU_AIRCRACK_NG_MODULE_MAKE_OPTS = \
+	CONFIG_PLATFORM_I386_PC=n \
 	CONFIG_88XXAU=m \
 	KVER=$(LINUX_VERSION_PROBED) \
 	USER_EXTRA_CFLAGS="$(RTL8812AU_AIRCRACK_NG_EXTRA_CFLAGS)"
 
+define RTL8812AU_AIRCRACK_NG_LINUX_CONFIG_FIXUPS
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NET)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_WIRELESS)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_CFG80211)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_USB_SUPPORT)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_USB)
+endef
+
 $(eval $(kernel-module))
 $(eval $(generic-package))