msm: mdss: hdmi: parse for resolutions in EDID block 0

If EDID block 1 is not available or video data block is not
available, allow parsing of resolutions from block 0.

CRs-Fixed: 596518
Change-Id: I8574de3f80c817ac764d467e622ded7430c0df86
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>