msm: mdss: hdmi: make edid parser an independent module

Currently only HDMI driver is using EDID parser. But this parse
can be utilized by other MDSS drivers. Make this as an independent
module which can be used by any other MDSS driver for EDID parsing.

Change-Id: I62622af6c27927b7cf0390238f311452c03cd262
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>