Forward fix for: Set FLAG_IMMUTABLE flag on FirstScreenBroadcast PendingIntent.

Bug: 179289753
Bug: 183927137
Test: restore phone and ensure broadcast is sent

Change-Id: I60e179d35957309f404937473fb5272f115b65ce
Merged-In: I70acd4ce48853be728be1fb80b4b885d00a059a9
(cherry picked from commit 89299047d7d4760545d1269de69f581700abcdde)
1 file changed