Clock provider drivers generally shouldn't include clk.h because
it's the consumer API. Remove the include here because this is a
provider driver. Also drop the clkdev.h include in files that
aren't using it.

Cc: Bintian Wang <bintian.wang@huawei.com>
Cc: Zhangfei Gao <zhangfei.gao@linaro.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>

Remove the static variable. So these common clock register helper could
be used in more SoCs.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@linaro.org>

Now only fixed rate clocks are appended into the clock driver.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@linaro.org>