qcacld-3.0: Add support for WLAN thermal mitigation

As part of new requirement WLAN subsystem needs to perform thermal
mitigation action as per the thermal state of the device. The
wifi hal sends vendor command QCA_NL80211_VENDOR_SUBCMD_THERMAL_CMD
with the thermal level parameter and wlan host performs the required
appropriate action. wlan host driver maps the thermal level to
corresponding duty cycle off percent value and duty cycle value,
send WMI_THERM_THROT_SET_CONF_CMDID cmd to FW.

Make changes to perform vendor command handling, mapping thermal level
to duty cycle value and communicating the thermal information to FW

change-ID: Ib2152bd4349786d1624eca480790e772414f9df6
CRs-Fixed: 2613529

configs/default_defconfig

@@ -850,6 +850,7 @@ CONFIG_WMI_CMD_STRINGS := y
 CONFIG_FEATURE_MONITOR_MODE_SUPPORT := y
 CONFIG_WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY := n
 CONFIG_WLAN_FEATURE_TWT := y
+CONFIG_FW_THERMAL_THROTTLE := y
 
 ifeq (y,$(findstring y,$(CONFIG_LITHIUM) $(CONFIG_ICNSS)))
 CONFIG_WLAN_FEATURE_BMI := n