iwlegacy: use writeb,writel,readl directly

That change will save us some CPU cycles at run time. Having
port-based I/O seems to be not possible for PCIe devices.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h
index df9b5b4..fd2a4ee 100644
--- a/drivers/net/wireless/iwlegacy/common.h
+++ b/drivers/net/wireless/iwlegacy/common.h
@@ -2114,20 +2114,20 @@
 static inline void
 _il_write8(struct il_priv *il, u32 ofs, u8 val)
 {
-	iowrite8(val, il->hw_base + ofs);
+	writeb(val, il->hw_base + ofs);
 }
 #define il_write8(il, ofs, val) _il_write8(il, ofs, val)
 
 static inline void
 _il_wr(struct il_priv *il, u32 ofs, u32 val)
 {
-	iowrite32(val, il->hw_base + ofs);
+	writel(val, il->hw_base + ofs);
 }
 
 static inline u32
 _il_rd(struct il_priv *il, u32 ofs)
 {
-	return ioread32(il->hw_base + ofs);
+	return readl(il->hw_base + ofs);
 }
 
 static inline void