Make HVAC temperature controls go on/off depending on the underlying property's availability

Instead of having a global HVAC_POWER_ON switch, one can use the new 'status' HAL concept to
abstract each HVAC's component's availability. Start prototyping how this would look at the app
layer with the temperature bar controls.

Bug: 74805437
Test: manual with a VHAL thread that marks the properties (un)available every 10 seconds
Change-Id: Ic1fb39653b951f78ef7e81be2689fde0c585b640
5 files changed
tree: 0e5c00c653d5faad67f01d19fb0abbbae84f253f
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml