The clock drivers have redefined the meaning of clk_enable and
clk_disable. Hence, new clock APIs are introduced.
-replace clk_enable API with clk_prepare_enable.
-replace clk_disable API with clk_disable_unprepare.
Change-Id: I99c8ea34661b385948311bb05ca481c2a0387f9e
Signed-off-by: Ramesh Masavarapu <rameshm@codeaurora.org>