venus: properly check and fill ahb buffer properties

venus: properly check and fill ahb buffer properties

When it comes to AHB, pExternalBufferInfo->handleType is already
overridden to the renderer handle type. Thus the AHB buffer prop path is
not used. However, this is not caught by cts, vvl or apps because the
host renderer memory features so far satisfy the ahb requirement.

Fixes: ebf0e455063 ("venus: add ahb image and buffer properties query support")
Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Ryan Neph <ryanneph@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13076>