media: venus: pm_helpers: add fallback for the opp-table

Since the device trees for both HFI_VERSION_1XX and HFI_VERSION_3XX
do not include an opp-table and have not configured opp-pmdomain, they
still need to use the frequencies defined in the driver's freq_tbl.

Both core_power_v1 and core_power_v4 functions require core_clks_enable
function during POWER_ON. Therefore, in the core_clks_enable function,
if calling dev_pm_opp_find_freq_ceil to obtain the frequency fails,
it needs to fall back to the freq_tbl to retrieve the frequency.

Fixes: b179234b ("media: venus: pm_helpers: use opp-table for the frequency")
Cc: stable@vger.kernel.org
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Vikash Garodia <quic_vgarodia@quicinc.com>
Closes: https://lore.kernel.org/linux-media/CA+G9fYu5=3n84VY+vTbCAcfFKOq7Us5vgBZgpypY4MveM=eVwg@mail.gmail.com


Signed-off-by: Renjiang Han <quic_renjiang@quicinc.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>