drm/msm: add msm8998 hdmi phy/pll support

Add support for the HDMI PHY as present on the Qualcomm MSM8998 SoC.
This code is mostly copy & paste of the vendor code from msm-4.4
kernel.lnx.4.4.r38-rel.

Signed-off-by: Arnaud Vrac <avrac@freebox.fr>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Marc Gonzalez <mgonzalez@freebox.fr>
Patchwork: https://patchwork.freedesktop.org/patch/605631/
Link: https://lore.kernel.org/r/20240724-hdmi-tx-v7-4-e44a20553464@freebox.fr


[DB: replaced division with do_div64 to fix build issues on ARM32]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>