Simply reboot if the boringssl self test fails

If this check fails and an OTA or mainline module update has recently
happened, we want to rollback the recent change.  The easiest way to
handle this is to reboot, which will trigger the fallback mechanisms
that are already in place.

Bug: 141082587
Test: device reboots if self test fails
Test: device rolls back a recently applied OTA with failing self test
Test: device rolls back a recently applied conscrypt apex update with
      failing self test
Change-Id: Iff879deff09d347262dc7a2acadb9164a5029d4a