DO NOT MERGE: drm_hwcomposer: Fix up some printf warnings and a clang-style nit
am: 717a44be8f

* commit '717a44be8f9f9282e6708b78cb3f2bbc8de7cb3a':
  DO NOT MERGE: drm_hwcomposer: Fix up some printf warnings and a clang-style nit

Change-Id: Ia34f75d02c5bbce17dc2d4903074f46e0757cc15