clk: qcom: Add MDM9607 GCC driver

Add Global Clock Controller (GCC) support for MDM9607 SoC.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210313020310.386152-2-konrad.dybcio@somainline.org


[sboyd@kernel.org: Drop clk.h include]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>