Power key behavior tweaks.
- Added a new value for config_longPressOnPowerBehavior:
"5" means "launch assist intent"
- Added global settings for power key longpress and "very
long press" (3.5 sec), allowing these functions to be
tweaked at runtime by privileged code
Bug:
130415373
Test: adb shell settings put global power_long_press 5
# ^ set longpress to assist
adb shell settings put global power_very_long_press 1
# ^ set vlongpress to globalactions (so you can still
# power off the device)
Test: atest frameworks/base/core/tests/coretests
Change-Id: Ic611b2850dc98fddd7662d32b0a60ca1e8231efb