staging: xgifb: fix multiple line dereference

This patch fixes the checkpatch.pl warning:

WARNING: Avoid multiple line dereference - prefer'XGI330_EModeIDTable[ModeIdIndex].Ext_ModeFlag'
Signed-off-by: Aastha Gupta <aastha.gupta4104@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/xgifb/vb_setmode.c

@@ -5479,8 +5479,9 @@ unsigned char XGISetModeNew(struct xgifb_video_info *xgifb_info,
 						   ModeIdIndex))
 				return 0;
 
-		pVBInfo->ModeType = XGI330_EModeIDTable[ModeIdIndex].
-						Ext_ModeFlag & ModeTypeMask;
+		pVBInfo->ModeType =
+			XGI330_EModeIDTable[ModeIdIndex].Ext_ModeFlag
+			& ModeTypeMask;
 
 		pVBInfo->SetFlag = 0;
 		pVBInfo->VBInfo = DisableCRT2Display;