package/rtl8188eu: enable required kernel options

Enable Linux kernel configuration options required by the driver.

Fixes:
 - http://autobuild.buildroot.org/results/951/9514704d6d44fc1b5dd188eac06b269427d3dee2
 - http://autobuild.buildroot.org/results/9ea/9ea060cc35e859ebc73c65fe2d1f7478f9b4fa8d
 - http://autobuild.buildroot.org/results/658/658c06f8125613b56511d3351cdfd3d8e19d48da

Reported-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: TIAN Yuanhao <tianyuanhao3@163.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/rtl8188eu/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_RTL8188EU
 	bool "rtl8188eu"
+	depends on !BR2_s390x
 	depends on BR2_LINUX_KERNEL
 	help
 	  A standalone driver for the RTL8188EU USB Wi-Fi adapter.
@@ -16,4 +17,5 @@ config BR2_PACKAGE_RTL8188EU
 	  https://github.com/lwfinger/rtl8188eu
 
 comment "rtl8188eu needs a Linux kernel to be built"
+	depends on !BR2_s390x
 	depends on !BR2_LINUX_KERNEL

package/rtl8188eu/rtl8188eu.mk

@@ -10,6 +10,14 @@ RTL8188EU_LICENSE = GPL-2.0, proprietary (rtl8188eufw.bin firmware blob)
 RTL8188EU_LICENSE_FILES = COPYING
 RTL8188EU_MODULE_MAKE_OPTS = CONFIG_RTL8188EU=m
 
+define RTL8188EU_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
+
 define RTL8188EU_INSTALL_FIRMWARE
 	$(INSTALL) -D -m 644 $(@D)/rtl8188eufw.bin \
 		$(TARGET_DIR)/lib/firmware/rtlwifi/rtl8188eufw.bin