Update gdbstub_arch crate to version 0.2.2 am: 7a64a43e82 am: e70e588e77 am: 01f70252f7 am: c4d8f27720

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/gdbstub_arch/+/2068150

Change-Id: I72c61c3e0f92b4656b3568ccebb8564c5419eef8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>