soc/amd/common/cpu/noncar/memmap: use VGA MMIO defines everywhere

Only the VGA MMIO range used the VGA_MMIO_* defines, but instead of
using constants for the end of the region before that and the beginning
of the region after that, the VGA_MMIO_* defines can be used.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I45c3888efb942cdd15416b730e36a9fb1ddd9697
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81391
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
diff --git a/src/soc/amd/common/block/cpu/noncar/memmap.c b/src/soc/amd/common/block/cpu/noncar/memmap.c
index 488c209..e6db85a 100644
--- a/src/soc/amd/common/block/cpu/noncar/memmap.c
+++ b/src/soc/amd/common/block/cpu/noncar/memmap.c
@@ -42,13 +42,13 @@
 	const uintptr_t early_reserved_dram_end = e->base + e->size;
 
 	/* 0x0 - 0x9ffff */
-	ram_range(dev, (*idx)++, 0, 0xa0000);
+	ram_range(dev, (*idx)++, 0, VGA_MMIO_BASE);
 
 	/* 0xa0000 - 0xbffff: legacy VGA */
 	mmio_range(dev, (*idx)++, VGA_MMIO_BASE, VGA_MMIO_SIZE);
 
 	/* 0xc0000 - 0xfffff: Option ROM */
-	reserved_ram_from_to(dev, (*idx)++, 0xc0000, 1 * MiB);
+	reserved_ram_from_to(dev, (*idx)++, VGA_MMIO_BASE + VGA_MMIO_SIZE, 1 * MiB);
 
 	/* 1MiB - bottom of DRAM reserved for early coreboot usage */
 	ram_from_to(dev, (*idx)++, 1 * MiB, early_reserved_dram_start);