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/drivers/generic/ioapic/ioapic.c b/src/drivers/generic/ioapic/ioapic.c
index 463474a..44f1b02 100644
--- a/src/drivers/generic/ioapic/ioapic.c
+++ b/src/drivers/generic/ioapic/ioapic.c
@@ -18,7 +18,7 @@
 	u32 bsp_lapicid = lapicid();
 	u32 low, high;
 	u32 i, ioapic_interrupts;
-	u32 ioapic_base;
+	void *ioapic_base;
 	u8 ioapic_id;
 
 	if (!dev->enabled || !config)
@@ -27,7 +27,7 @@
 	ioapic_base = config->base;
 	ioapic_id = config->apicid;
 
-	printk(BIOS_DEBUG, "IOAPIC: Initializing IOAPIC at 0x%08x\n",
+	printk(BIOS_DEBUG, "IOAPIC: Initializing IOAPIC at 0x%p\n",
 	       ioapic_base);
 	printk(BIOS_DEBUG, "IOAPIC: Bootstrap Processor Local APIC = 0x%02x\n",
 	       bsp_lapicid);
@@ -93,7 +93,7 @@
 	struct resource *res;
 
 	res = new_resource(dev, 0);
-	res->base = config->base;
+	res->base = (resource_t)(uintptr_t)config->base;
 	res->size = 0x1000;
 	res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
 }