video: adf: add buffer padding quirk

Quirks specify common behaviors that vary slightly among devices, and
which ADF must account for.

The buffer padding quirk captures the way different devices fetch the
last scanline in a buffer: some devices fetch an entire line (including
padding to the pitch) while others only fetch up to the visible width.
ADF's buffer size validation now takes this quirk into account.

Change-Id: I828b13316e27621d8a9efd9d5fffa6ce12a525ff
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Git-commit: adbe864576c5e5ac848d7e6009f760efdd00b44d
Git-repo: https://android.googlesource.com/kernel/common.git


Signed-off-by: Ian Maund <imaund@codeaurora.org>