Allow mediaextractor/mediacodec to connect to tombstoned.

Whitelist recvmsg so that mediaextractor and mediacodec can get an
output fd from tombstoned.

Bug: http://b/35858739
Test: debuggerd -b `pidof media.codec`
Change-Id: I2126da6c77bde739ae37c48b1a13dcefc6482a64
4 files changed