felix/vibrator: Disable PWLE by default

Set chirp.enabled prop to 0 by default so that it will not cause tests
to fail.
Change prop to persist from ro so that it can be enabled for testing.
Update Felix HAL to use new prop.

Bug: 286921585
Test: Tried using idlcli composePwle before/after setting prop
Change-Id: Ibca473aef62b7cc8e84689ddba83a91daddb8d2e
Signed-off-by: Nathan Kulczak <[email protected]>
2 files changed