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/jetway/pa78vm5/mptable.c b/src/mainboard/jetway/pa78vm5/mptable.c
index 7cabdf1..e28d057 100644
--- a/src/mainboard/jetway/pa78vm5/mptable.c
+++ b/src/mainboard/jetway/pa78vm5/mptable.c
@@ -60,7 +60,8 @@
 				  PCI_DEVFN(sbdn_sb700 + 0x14, 0));
 		if (dev) {
 			dword = pci_read_config32(dev, 0x74) & 0xfffffff0;
-			smp_write_ioapic(mc, apicid_sb700, 0x11, dword);
+			smp_write_ioapic(mc, apicid_sb700,
+					 0x11,(void *) dword);
 
 			/* Initialize interrupt mapping */
 			/* aza */