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/soc/intel/broadwell/minihd.c b/src/soc/intel/broadwell/minihd.c
index 43aeec2..6fd8e63 100644
--- a/src/soc/intel/broadwell/minihd.c
+++ b/src/soc/intel/broadwell/minihd.c
@@ -68,7 +68,7 @@
 static void minihd_init(struct device *dev)
 {
 	struct resource *res;
-	u32 base, reg32;
+	u8 *base, reg32;
 	int codec_mask, i;
 
 	/* Find base address */
@@ -76,8 +76,8 @@
 	if (!res)
 		return;
 
-	base = (u32)res->base;
-	printk(BIOS_DEBUG, "Mini-HD: base = %08x\n", (u32)base);
+	base = res2mmio(res, 0, 0);
+	printk(BIOS_DEBUG, "Mini-HD: base = %p\n", base);
 
 	/* Set Bus Master */
 	reg32 = pci_read_config32(dev, PCI_COMMAND);