Pinctrl/spear: plgpio: don't call prepare/unprepare
SPEAr SoC's don't do anything in clk_prepare() of plgpio driver, so there is no need to call this routine multiple times. Just call it once at probe. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
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