mach: msm: Move clock library headers to include/soc/qcom/

Architectural changes in the ARM Linux kernel require moving
some MSM specific headers related to clock library to include/soc/qcom.

Change-Id: I50f72e2d2f3314d8f0a025d9e4cf04abca34be9a
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>