linux-phytec-fsl

uart: pl011: Introduce register accessor

Introduce register accessor to ease loop up table access
in later patch.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>