Merge "Add exfat fs in fs_mgr" into main am: bc907c00 am: 73469a12 am: 15751a3a

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2842875



Change-Id: I0f7fca3d76c59ea0d3a42aaafe33561d1582d779
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>