vga16fb: use display information in info not in var for panning

We must not use any information in the passed var besides xoffset,
yoffset and vmode as otherwise applications might abuse it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
diff --git a/drivers/video/vga16fb.c b/drivers/video/vga16fb.c
index 305c975..0267acd 100644
--- a/drivers/video/vga16fb.c
+++ b/drivers/video/vga16fb.c
@@ -207,7 +207,7 @@
 	 * granularity if someone supports xoffset in bit resolution */
 	vga_io_r(VGA_IS1_RC);		/* reset flip-flop */
 	vga_io_w(VGA_ATT_IW, VGA_ATC_PEL);
-	if (var->bits_per_pixel == 8)
+	if (info->var.bits_per_pixel == 8)
 		vga_io_w(VGA_ATT_IW, (xoffset & 3) << 1);
 	else
 		vga_io_w(VGA_ATT_IW, xoffset & 7);