Use both optimization flags

Summary:
Should give -o3 benefits without derping BT

Change-Id: Idf0afaa9ace74ad7f566110c79c1c1a63462dd3b

Test Plan: none needed

Reviewers: Mustaavalkosta, randall.rushing, michyprima, rlasalle15, Roach, synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D247