bpfRingbufProg: use simplified DEFINE_BPF_RINGBUF() macro am: 210bb980b9 am: 772a89f178

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/3255937

Change-Id: I53c8f27af3af1afb15ef602151c1ba2a4edc3e85
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>