x86: bayleybay: Change default vga bios rom address

With multiple microcode blobs included, the generated u-boot-dtb.bin
leaves merely several hundred bytes before the vga bios. Change the
vga bios rom address to make a bigger room for u-boot-dtb.bin.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/bayleybay_defconfig b/configs/bayleybay_defconfig
index 13bd282..766576d 100644
--- a/configs/bayleybay_defconfig
+++ b/configs/bayleybay_defconfig
@@ -5,6 +5,7 @@
 CONFIG_HAVE_INTEL_ME=y
 CONFIG_SMP=y
 CONFIG_HAVE_VGA_BIOS=y
+CONFIG_VGA_BIOS_ADDR=0xfffa0000
 CONFIG_GENERATE_PIRQ_TABLE=y
 CONFIG_GENERATE_MP_TABLE=y
 CONFIG_CMD_CPU=y