clk: qcom: Add HALT_DELAY for gpu_cc_cx_gfx3d_clk for SM6150

CBCR for gpu_cc_cx_ahb_clk does not toggle according to the
clock on/off status. Hence, add HALT_DELAY to stop polling
for clock_off bit.
Also, update the parent of cx_gfx3d_clk
from gpu_cc_gx_gfx3d_clk_src to gpu_cc_gx_gfx_clk as the
RCG enable HW signal is tied to this clock.

Change-Id: I75f447627e294b45e2316624729fb403850d2a3e
Signed-off-by: Diptanshu Jamgade <djamgade@codeaurora.org>