platsupport: Refactored Exynos5422 clk defs

The clock controller definitions (offsets, values etc) for
Exynos5422 differs from the other supported exynos5 platforms.
The differing definitions have been moved out into seperate
headers, conditionally included based on the exynos soc being
built for.

platsupport: Updated clock settings on exynos5422

The clock controller on the exynos5422 has a different
configuration compared to previous exynos54XX platforms the
library currently supports. In particilar the PLL CMUs have been
updated according to the exynos5422 specification. This allows
enables the user to properly set and get PLL frequency values.

Fix whitespace

- remove trailing whitespace
- remove duplicate blank lines
- remove blank lines at end of file

fix licenses

Remove trailing whitespace