staging: xgifb: added blankline after decl.

Fixed checkpatch warning:
WARNING: Missing a blank line after declarations
#882: FILE: drivers/staging/xgifb/XGI_main_26.c:882:
+                               const u8 *f =
XGI_TV_filter[filter_tb].filter[filter];
+                               pr_debug("FilterTable[%d]-%d: %*ph\n",
Signed-off-by: Andrea della Porta <sfaragnaus@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/xgifb/XGI_main_26.c

@@ -879,6 +879,7 @@ static void XGIfb_post_setmode(struct xgifb_video_info *xgifb_info)
 
 			if ((filter >= 0) && (filter <= 7)) {
 				const u8 *f = XGI_TV_filter[filter_tb].filter[filter];
+
 				pr_debug("FilterTable[%d]-%d: %*ph\n",
 					 filter_tb, filter, 4, f);
 				xgifb_reg_set(XGIPART2, 0x35, f[0]);