We need to return the corresponding bit for a particular GPIO. This bit
contains shift not mask.
Signed-off-by: NMarkus Mayer <markus.mayer@linaro.org>
Reviewed-by: NTim Kryger <tim.kryger@linaro.org>
Reviewed-by: NMatt Porter <matt.porter@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>