msm_fb: hdmi: change HDMI_PHY_REG1 based on foundry.

Set value of HDMI_PHY_REG1[2:0] for output voltage swing control,
to prevent fallout for Vlow for GF foundry MSM's.

Change-Id: Ifb0f694226896fa1ad74dd84fb489f015901fc3e
Signed-off-by: Abhishek Kharbanda <akharban@codeaurora.org>
Signed-off-by: Mukesh Jha <cmjha@codeaurora.org>