Merge "libstagefright: Do not use max/min luminance if it's 0" am: c9643eeae5 am: f40667acd4

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1427069

Change-Id: I3ce02391d0e123324c11baa86a28a53f4b15db50