Staging: rtl8192u: Fix do not use // c99 comments.

This patch fixes "do not use // C99 comments" errors in
r8190_rtl8256.h
Signed-off-by: Dilek Uzulmez <dilekuzulmez@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/r8190_rtl8256.h

@@ -13,7 +13,7 @@
 #ifndef RTL8225H
 #define RTL8225H
 
-#define RTL819X_TOTAL_RF_PATH 2 //for 8192U
+#define RTL819X_TOTAL_RF_PATH 2 /* for 8192U */
 extern void PHY_SetRF8256Bandwidth(struct net_device *dev , HT_CHANNEL_WIDTH Bandwidth);
 extern void PHY_RF8256_Config(struct net_device *dev);
 extern void phy_RF8256_Config_ParaFile(struct net_device *dev);