rtlwifi: Let rtlwifi build when PCI is not enabled

On systems where PCI does not exist, a build of rtlwifi will fail.
Apply the same fix in case there are systems with PCI but not USB.
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rtlwifi/Makefile

@@ -5,12 +5,15 @@ rtlwifi-objs	:=		\
 		core.o		\
 		debug.o		\
 		efuse.o		\
-		pci.o		\
 		ps.o		\
 		rc.o		\
 		regd.o		\
 		usb.o
 
+ifeq ($(CONFIG_PCI),y)
+rtlwifi-objs	+= pci.o
+endif
+
 obj-$(CONFIG_RTL8192CE)		+= rtl8192ce/
 obj-$(CONFIG_RTL8192CU)		+= rtl8192cu/