staging: xgifb: eliminate fbcon_XGI_fillrect()

fbcon_XGI_fillrect() implementation is trivial and can be replaced with
cfb_fillrect().

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
index 6cf2eea..fa97c379 100644
--- a/drivers/staging/xgifb/XGI_main_26.c
+++ b/drivers/staging/xgifb/XGI_main_26.c
@@ -1738,7 +1738,7 @@
 	.fb_pan_display = XGIfb_pan_display,
 #endif
 	.fb_blank = XGIfb_blank,
-	.fb_fillrect = fbcon_XGI_fillrect,
+	.fb_fillrect = cfb_fillrect,
 	.fb_copyarea = cfb_copyarea,
 	.fb_imageblit = cfb_imageblit,
 	.fb_ioctl = XGIfb_ioctl,