clk: qcom: mdss: Fix MDSS HDMI pll support

PHY registers are not updated during MDSS HDMI
pll configuration due to wrong memory mapping.
It also leads to crash when user connects the
HDMI cable with target. This change fixes the
memory mapping for PHY and also adds the missing
register configuration entry for HDMI pll.

Change-Id: Ie81045fed320993fbab6b02bec6b2b82e5b5d495
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>