EXYNOS: Clock: Add common function for pll rate calculation

Moved the common code to calculate pll clock rate to new function
exynos_get_pll_clk().

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
1 file changed