clk: qcom: Add MSM8226 Multimedia Clock Controller support

Modify the existing MSM8974 multimedia clock controller driver to
support the MMCC found on MSM8226 based devices. This should allow most
multimedia device drivers to probe and control their clocks.

Signed-off-by: Bartosz Dudziak <bartosz.dudziak@snejp.pl>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220207185411.19118-3-bartosz.dudziak@snejp.pl