msm_fb:hdmi:Fix for audio not routed to HDMI issue

Due to recent security fixes, in HDMI VSD block
parsing is failing which is causing driver to
consider the HDTV connected as DVI and hence no
audio is routed to TV. So removing the incorrect
length check in hdmi_edid_extract_ieee_reg_id function

Change-Id: Iea4a0969710ee1f4411b14973e7d1678f81183cc
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>