BACKPORT: media: venus: hfi: add checks to perform sanity on queue pointers

Read and write pointers are used to track the packet index in the memory
shared between video driver and firmware. There is a possibility of OOB
access if the read or write pointer goes beyond the queue memory size.
Add checks for the read and write pointers to avoid OOB access.

commit 5e538fce3358 ("media: venus: hfi: add checks to perform sanity on
queue pointers").

Change-Id: I6c280854a7a51e38d92a2923d4c9bfe6a49c0ce2
Cc: stable@vger.kernel.org
Fixes: d96d3f30 ("[media] media: venus: hfi: add Venus HFI files")
Signed-off-by: Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Vikash Garodia <quic_vgarodia@quicinc.com>