clk: qcom: Add SC8280XP GPU clock controller

Add driver for the GPU clock controller in the Qualcomm SC8280XP
platform.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
[bjorn: Included kernel.h and lower-cased hex numbers]
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220926173025.4747-3-quic_bjorande@quicinc.com