clk: msm: clock-gcc-8952: Modify clock ops for byte & pixel clock

Move the clock ops for byte and pixel clock to support multiparent
functionality to help select the source at runtime.

Change-Id: I770d923d6b19790a3ddb301e93cdd6079956bb72
Signed-off-by: Jaydeep Sen <jsen@codeaurora.org>