Merge "init: Add diagnostics for signalfd epoll failures." am: 5c007a51dd am: a0cc2ee6b1 am: feb5bd6fc3

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2012248

Change-Id: Id278b881331a2e8f041f78945feea0011eb60fdd