Identify samplerExternalOES in sampler array am: 9212a425a4 am: e212b4d878

Original change: https://android-review.googlesource.com/c/device/generic/goldfish-opengl/+/2055509

Change-Id: I82d986bf4d5a4dab4813d0b375579c1ae6cea6b2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>