media: video: VC to use data polarity given by client

VC would ignore the polarity given by the client and hardcode the
value to zero. Now client is properly reporting value, VC now
takes the value provided by the client.

Change-Id: I511b59ed3e9f6b47d14cd688592d85ab97a5204d
Signed-off-by: Terence Hampson <thampson@codeaurora.org>