doc: add bpfloader rc files from previous Android releases am: b0940279c4

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2799941

Change-Id: I981403ea7448a9c92bb1a94bf623c3231052856c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>