defconfig: msm: Disable CONFIG_FB_MSM_MDSS_HDMI_PANEL for msm8937

msm8937 does not have HDMI controller. Remove the kernel configuration
for the same.

Change-Id: I77b6ded663e931dd0216811fb5be45ea8b3788c6
Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>