i2c: Use <linux/io.h> instead of <asm/io.h>

As warned by checkpatch.pl, <linux/io.h> should be used instead of
<asm/io.h>.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c
index de78283..7799fe5 100644
--- a/drivers/i2c/busses/i2c-via.c
+++ b/drivers/i2c/busses/i2c-via.c
@@ -25,7 +25,7 @@
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
-#include <asm/io.h>
+#include <linux/io.h>
 
 /* Power management registers */
 #define PM_CFG_REVID	0x08	/* silicon revision code */