Add PWLE notification vibration patterns for P21 devices

Add the PWLE vibration pattern to the config.xml overlays for Pixel 2021
devices that support frequency control.

The patterns use the amplitude and frequency hand-designed for both
raven and oriole devices. The amplitude is using the maximum supported
value of 0.4, to allow scaling based on user settings.

Bug: 212366218
Test: manual
Change-Id: I73a2f3e50901b80aef299f4c8e9807a551170bbc
Merged-In: I73a2f3e50901b80aef299f4c8e9807a551170bbc
2 files changed