package/rtl8192eu: fix build failure on Big Endian architectures

Let's disable the CONFIG_PLATFORM_I386_PC that is set to y by default
involving the endianness to be set to little. This way we can set the
CFLAGS according to architecture with some default define like:
-DCONFIG_IOCTL_CFG80211
-DRTW_USE_CFG80211_STA_EVENT
-Wno-error

Suggested-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/rtl8192eu/rtl8192eu.mk

@@ -7,9 +7,16 @@
 RTL8192EU_VERSION = 94bce7798bbb18de6d8b1646dedb2511f24867d3
 RTL8192EU_SITE = $(call github,clnhub,rtl8192eu-linux,$(RTL8192EU_VERSION))
 RTL8192EU_LICENSE = GPL-2.0
+
+RTL8192EU_USER_EXTRA_CFLAGS = -DCONFIG_$(call qstrip,$(BR2_ENDIAN))_ENDIAN \
+			      -DCONFIG_IOCTL_CFG80211 \
+			      -DRTW_USE_CFG80211_STA_EVENT \
+			      -Wno-error
+
 RTL8192EU_MODULE_MAKE_OPTS = \
+	CONFIG_PLATFORM_I386_PC=n \
 	CONFIG_RTL8192EU=m \
-	USER_EXTRA_CFLAGS="-Wno-error"
+	USER_EXTRA_CFLAGS="$(RTL8192EU_USER_EXTRA_CFLAGS)"
 
 define RTL8192EU_LINUX_CONFIG_FIXUPS
 	$(call KCONFIG_ENABLE_OPT,CONFIG_NET)