The following warning is seen during bwmon_remove due to refcount
imbalance, fix this by releasing the OPPs after use.

Logs:
WARNING: at drivers/opp/core.c:1640 _opp_table_kref_release+0x150/0x158
Hardware name: Qualcomm Technologies, Inc. X1E80100 CRD (DT)
...
Call trace:
_opp_table_kref_release+0x150/0x158
dev_pm_opp_remove_table+0x100/0x1b4
devm_pm_opp_of_table_release+0x10/0x1c
devm_action_release+0x14/0x20
devres_release_all+0xa4/0x104
device_unbind_cleanup+0x18/0x60
device_release_driver_internal+0x1ec/0x228
driver_detach+0x50/0x98
bus_remove_driver+0x6c/0xbc
driver_unregister+0x30/0x60
platform_driver_unregister+0x14/0x20
bwmon_driver_exit+0x18/0x524 [icc_bwmon]
__arm64_sys_delete_module+0x184/0x264
invoke_syscall+0x48/0x118
el0_svc_common.constprop.0+0xc8/0xe8
do_el0_svc+0x20/0x2c
el0_svc+0x34/0xdc
el0t_64_sync_handler+0x13c/0x158
el0t_64_sync+0x190/0x194
--[ end trace 0000000000000000 ]---

Fixes: 0276f69f ("soc: qcom: icc-bwmon: Set default thresholds dynamically")
Fixes: b9c2ae6c ("soc: qcom: icc-bwmon: Add bandwidth monitoring driver")
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240613164506.982068-1-quic_sibis@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>