Move this driver to use devm_clk_register() to simplify some
error paths and reduce lines of code.
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NMike Turquette <mturquette@linaro.org>