staging/xgifb: Add header #include guards to vb_table.h

This patch adds a simple #include guard to vb_table.h

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/xgifb/vb_table.h b/drivers/staging/xgifb/vb_table.h
index d22e599..9a17113 100644
--- a/drivers/staging/xgifb/vb_table.h
+++ b/drivers/staging/xgifb/vb_table.h
@@ -1,3 +1,5 @@
+#ifndef _VB_TABLE_
+#define _VB_TABLE_
 /* yilin modify for xgi20 */
 static struct SiS_MCLKData XGI340New_MCLKData[] = {
 	{0x16, 0x01, 0x01, 166},
@@ -2696,3 +2698,4 @@
 		 }
 	}
 };
+#endif