Cleanup several Qualcomm clock drivers by removing unused entries from parents map, removing test clock, etc. Changes since v2: - Comment out unsupported video_pll0_out_odd/_even clocks instead of removing them or just using .name for them. The clocks are unsupported, but mux values are provided for the future reference. Changes since v1: - Remove unused entries from gpucc-sc7180, gpucc-sdm845, videocc-sc7180 and videocc-sm8150 drivers - Restore video_pll0_out_odd/_even entries in videocc-sdm845 driver as requested by Taniya Das.