wrap the readb(), writeb() into inline function calls.
It would make the driver more clearer to support platform
with different register offset.
Signed-off-by: NJingchang Lu <b35083@freescale.com>
Reviewed-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>