staging: xgifb: checkpatch cleanup __func__

Replaced an instance of __FUNCTION__ with __func__ in XGI_main_26.c.

Signed-off-by: Sam Hansen <solid.se7en@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
index 8fe6edab..a67f65d 100644
--- a/drivers/staging/xgifb/XGI_main_26.c
+++ b/drivers/staging/xgifb/XGI_main_26.c
@@ -57,7 +57,7 @@
 #undef XGIFBDEBUG
 
 #ifdef XGIFBDEBUG
-#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
+#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
 #else
 #define DPRINTK(fmt, args...)
 #endif