FROMLIST: media: venus: Add a check for packet size

commit <5fc03605222d141e5e2425a2a81a35ec87496b90>
(<"media: venus: Add a check for packet size">)

Add a check to ensure that the packet size does not exceed the number of
available words after reading the packet header from shared memory. This
ensures that the size provided by the firmware is safe to process and
prevent potential out-of-bounds memory access.

Fixes: d96d3f30 ("[media] media: venus: hfi: add Venus HFI files")
Change-Id: I561f411e0a448f8436dafdadb755deb563ce49c2
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Vedang Nagar <quic_vnagar@quicinc.com>
Co-developed-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Signed-off-by: Vasantha Balla <quic_c_vballa@quicinc.com>