nb/intel: Use get_int_option()

Change-Id: I8896531d6df729709456bc6e79e02136d9ea7b3b
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47112
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
diff --git a/src/northbridge/intel/gm45/igd.c b/src/northbridge/intel/gm45/igd.c
index f4a0e0c..f7bdb28 100644
--- a/src/northbridge/intel/gm45/igd.c
+++ b/src/northbridge/intel/gm45/igd.c
@@ -116,11 +116,11 @@
 		sysinfo->ggc = 0x0002;
 	else {
 		/* 4 for 32MB, default if not set in CMOS */
-		u8 gfxsize = 4;
+		u8 gfxsize = get_int_option("gfx_uma_size", 4);
 
 		/* Graphics Stolen Memory: 2MB GTT (0x0300) when VT-d disabled,
 		   2MB GTT + 2MB shadow GTT (0x0b00) else. */
-		get_option(&gfxsize, "gfx_uma_size");
+
 		/* Handle invalid CMOS settings */
 		/* Only allow settings between 32MB and 352MB */
 		gfxsize = MIN(MAX(gfxsize, 4), 12);