Don't depend on String8 cast to C string am: 8acdce346b am: c943f58653 am: cb3b13b334

Original change: https://android-review.googlesource.com/c/platform/hardware/google/graphics/gs101/+/2749177

Change-Id: Iaed5e8757692e20e8cb7fcc2cc48e606f670f0b5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>