rtlwifi: don't add include path for rtl8188ee

For rtl8188ee, we pass -Idrivers/net/wireless/rtlwifi/ to gcc,
however that directy no longer exists, so evidently this option
is no longer required here and can be removed to avoid a warning
when building with 'make W=1' or 'gcc -Wmissing-include-dirs'
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/rtl8188ee/Makefile

@@ -12,4 +12,4 @@ rtl8188ee-objs :=		\
 
 obj-$(CONFIG_RTL8188EE) += rtl8188ee.o
 
-ccflags-y += -Idrivers/net/wireless/rtlwifi -D__CHECK_ENDIAN__
+ccflags-y += -D__CHECK_ENDIAN__