cpu/amd/mtrr: Use newer function for resource declaration

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I62f34a12bc5c4807638ddcb39fa5e450d99511fe
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76277
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/amd/mtrr/amd_mtrr.c

@@ -19,5 +19,5 @@ void add_uma_resource_below_tolm(struct device *nb, int idx)
 	printk(BIOS_INFO, "%s: uma size 0x%08x, memory start 0x%08x\n", __func__, uma_size,
 	       uma_base);
 
-	uma_resource_kb(nb, idx, uma_base / KiB, uma_size / KiB);
+	mmio_range(nb, idx, uma_base, uma_size);
 }