Merge "BPF: remove duplicate cflags and update btf flags." into main am: 6b26c3cd4a am: 3ac6aa62b1

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/3196910

Change-Id: I2510c8233b38aa17894c4323b58e396273218e80
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>