Staging: rtl8723au: Declare function static

Declare function Efuse_ReadAllMap as static since it's defined and used
only in this file.

Signed-off-by: Ksenija Stanojevic <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/rtl8723au/core/rtw_efuse.c

···
 }
 
 /* Read All Efuse content */
-void Efuse_ReadAllMap(struct rtw_adapter *pAdapter, u8 efuseType, u8 *Efuse)
+static void Efuse_ReadAllMap(struct rtw_adapter *pAdapter, u8 efuseType,
+			     u8 *Efuse)
 {
 	u16	mapLen = 0;