msm: clock-mdss-8974: Dynamic HDMI PHY-PLL configuration

Implement the  HDMI PHY PLL calculator to dynamically configure the
HDMI PLL VCO to any supported pixel rate within the supported range.

Change-Id: I5665509aeaf54132ae711e3c4c9be542b25b8241
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>