bm: Add triggered event thread

Add thread to handle triggered event.
Remove pcieModem, Wifi and last_triggered_mode stats.

Bug: 299700579
Test: Flash and boot
Change-Id: I9d4877be71e64ad0ee53bccb705fca8bbc4d5ad8
Signed-off-by: George Lee <geolee@google.com>
1 file changed