msm: mdss: Add mdss capabilities for msmgold

Add MDSS version info along with other capabilities
for msmgold.

Change-Id: Ia4602fdaf29bad28dffab4bb08a43a6eb6f32178
Signed-off-by: Krishna Chaitanya Devarakonda <kdevarak@codeaurora.org>
Signed-off-by: Kalyan Thota <kalyant@codeaurora.org>
Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>