soc/amd/common/block/lpc/lpc: use mmio_range to report FCH IOAPIC MMIO

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I813a27e392a842188dc474018f82e10309783260
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74846
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/soc/amd/common/block/lpc/lpc.c b/src/soc/amd/common/block/lpc/lpc.c
index edc7476..43b3791 100644
--- a/src/soc/amd/common/block/lpc/lpc.c
+++ b/src/soc/amd/common/block/lpc/lpc.c
@@ -126,10 +126,8 @@
 	/* Add a memory resource for the eSPI MMIO */
 	mmio_range(dev, 3, SPI_BASE_ADDRESS + ESPI_OFFSET_FROM_BAR, 4 * KiB);
 
-	res = new_resource(dev, 4); /* IOAPIC */
-	res->base = IO_APIC_ADDR;
-	res->size = 0x00001000;
-	res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+	/* FCH IOAPIC */
+	mmio_range(dev, 4, IO_APIC_ADDR, 4 * KiB);
 
 	compact_resources(dev);
 }