clk: qcom: Add Global Clock controller (GCC) driver for SDM845

Add support for the global clock controller found on SDM845
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Amit Nischal <anischal@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>