clk:qcom: Snapshot of mdss pll driver

This snapshot includes mdss pll driver changes for
different nm chipsets. Change also includes updated copyright
year in all files. This snapshot was taken from msm-4.14
as of commit 1df57774a520 ("Merge "ARM: dts: msm: Remove
dma-coherent for IPA for sdxprairie"").

Change-Id: I49c66cd4fa474c464c4c2d55cd8712d214bb791b
Signed-off-by: Satya Rama Aditya Pinapala <psraditya30@codeaurora.org>