Revert "Revert "gcc-4.9: move binaries to find build breakages""

This reverts commit 4f9288e0a083b8400556ff67b67af793c4883077.

Reason for revert: aosp/1221338 final blocker resolved
Bug: 147296060
Test: lunch beagle_x15 && m && find $OUT -name MLO && \
  find $OUT -name u-boot.img
Change-Id: I97102758b719708c0958f92282681df0401dfacc
6 files changed