add Linux kernel symbol namespace support am: 977cb756cc

Original change: https://android-review.googlesource.com/c/platform/external/libabigail/+/2252145

Change-Id: I1f60ce2cf0b0e1064d7d4a25082e1c41eda72339
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>