Staging: rtl8712: rtl8712_gp_bitdef.h: Coding style warning fix for block comment

This is patch to the rtl8712_gp_bitdef.h file that fixes up following
 warning reported by checkpatch.pl :

-Block comments use a trailing */ on a separate line
Signed-off-by: Punit Vara <punitvara@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/rtl8712_gp_bitdef.h

@@ -64,7 +64,8 @@
 
 #define		GPIOMUX_EN	BIT(3)	/* When this bit is set to "1",
 					 * GPIO PINs will switch to MAC
-					 * GPIO Function*/
+					 * GPIO Function
+					 */
 #define		GPIOSEL_GPIO	0	/* UART or JTAG or pure GPIO*/
 #define		GPIOSEL_PHYDBG	1	/* PHYDBG*/
 #define		GPIOSEL_BT	2	/* BT_coex*/