clk: msm: clock: Decouple PLL min frequency from being fabia specific

Currently, the min_supported_rate is only used for fabia PLLs.
This is a generic PLL property which needs to be checked for
all PLLs.

Change-Id: Iaec2ee84468bb40a68ded9355aa7587eabbe86b9
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>