rtl8xxxu: move rtl8188[cr] and rtl8192c related code into rtl8xxxu_8192c.c

This moves the code for rtl8188c, rtl8188r, and rtl8192c into it's own
file. This is purely a code moving exercise, there is no change to the
code itself.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtl8xxxu/Makefile

 obj-$(CONFIG_RTL8XXXU)	+= rtl8xxxu.o
 
 rtl8xxxu-y	:= rtl8xxxu_core.o rtl8xxxu_8192e.o rtl8xxxu_8723b.o \
-		   rtl8xxxu_8723a.o
+		   rtl8xxxu_8723a.o rtl8xxxu_8192c.o

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h

@@ -1421,6 +1421,7 @@ int rtl8xxxu_gen2_channel_to_group(int channel);
 bool rtl8xxxu_gen2_simularity_compare(struct rtl8xxxu_priv *priv,
 				      int result[][8], int c1, int c2);
 
+extern struct rtl8xxxu_fileops rtl8192cu_fops;
 extern struct rtl8xxxu_fileops rtl8192eu_fops;
 extern struct rtl8xxxu_fileops rtl8723au_fops;
 extern struct rtl8xxxu_fileops rtl8723bu_fops;