ANDROID: thermal: Add a flag for vendor hook enable_thermal_power_throt-

tle

Taking in account of SoC's surface temperature, we have to use more str-
ict temperature control to make IPA can monitor and mitigate temperature
control earlier and faster. It means power budget will be overridden wi-
th a more strict one(user power budget). So add an override flag.

It is not the same as "enable" flag. Originally, whether the IPA turns
on or not depends on whether the temperature exceeds switch_on_temp，the-
refore add "enable" flag.

About enable flag:
true: enable IPA control when temperature >= swtich_on_temp
false: disable IPA control when temperature < switch_on_temp

Now in order not to affect the original logic, add flag "override".

About override flag:
true: power budget is overridden by user power budget, and then thermal
power throttle takes action even if temperature < switch_on_temp.
false: power budget is not overridden, there's no other thermal requirm-
ent. Normal temperature control.

Bug: 209386157

Signed-off-by: Di Shen <di.shen@unisoc.com>
Change-Id: Ia9bbded636809d89d90a330df302391a5f4b3f5a