abi: update libabigail to latest upstream mm-next

 - support for kernels and modules built with CFI
 - add support for kernel symbols added to the KMI

upstream commit 5fea646d593ff203f224b90a7f6edc6abe99c17d

Bug: 145155725
Bug: 138684110
Change-Id: I9d5e4cb3aa65579d0c22cc5fbc30136f3bb1a88e
Signed-off-by: Matthias Maennich <maennich@google.com>
diff --git a/abi/bootstrap b/abi/bootstrap
index ea7a5ba..aff6d84 100755
--- a/abi/bootstrap
+++ b/abi/bootstrap
@@ -15,7 +15,7 @@
 # limitations under the License.
 
 ELFUTILS_VERSION=elfutils-0.176
-ABIGAIL_VERSION=e858537d
+ABIGAIL_VERSION=5fea646d
 
 NUM_CORES=$(cat /proc/cpuinfo | grep -c proc)
 BASE_DIR=$(readlink -f $(dirname $0))