include: linux: Add flag for new EOS type

Add new flag for NAL EOS type. This flag is used to
send EOS to userspace if EOS is detected by FW using NAL.

Change-Id: I6886c010232b7822fd6c21b0b072884cb7493eef
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>