uapi: msm: mdss: add flag to indicate if content is interlaced

When rotation session involves an interlaced layer that is intended to be
deinterlaced by MDP, client is expected to pass in flag indicating rotator
needs to deinterlace content.

Change-Id: I27c009e32cd82e00713c20b3accb2efbe5587344
Signed-off-by: Terence Hampson <thampson@codeaurora.org>