x86: Change MMIO addr in readN(addr)/writeN(addr, val) to pointer

On x86, change the type of the address parameter in
read8()/read16/read32()/write8()/write16()/write32() to be a
pointer, instead of unsigned long.

Change-Id: Ic26dd8a72d82828b69be3c04944710681b7bd330
Signed-off-by: Kevin Paul Herbert <kph@meraki.net>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/7784
Tested-by: build bot (Jenkins)
diff --git a/src/mainboard/amd/inagua/mptable.c b/src/mainboard/amd/inagua/mptable.c
index 7686bd2..44eda71 100644
--- a/src/mainboard/amd/inagua/mptable.c
+++ b/src/mainboard/amd/inagua/mptable.c
@@ -52,8 +52,8 @@
 	 * have been written so they can be read to get the correct
 	 * APIC ID and Version
 	 */
-	u8 ioapic_id = (io_apic_read(IO_APIC_ADDR, 0x00) >> 24);
-	u8 ioapic_ver = (io_apic_read(IO_APIC_ADDR, 0x01) & 0xFF);
+	u8 ioapic_id = (io_apic_read(VIO_APIC_VADDR, 0x00) >> 24);
+	u8 ioapic_ver = (io_apic_read(VIO_APIC_VADDR, 0x01) & 0xFF);
 
 	mc = (void *)(((char *)v) + SMP_FLOATING_TABLE_LEN);
 
@@ -65,7 +65,7 @@
 	mptable_write_buses(mc, NULL, &bus_isa);
 
 	/* I/O APICs:   APIC ID Version State   Address */
-	smp_write_ioapic(mc, ioapic_id, ioapic_ver, IO_APIC_ADDR);
+	smp_write_ioapic(mc, ioapic_id, ioapic_ver, VIO_APIC_VADDR);
 
 	u8 byte;