This will enable the "Reboot with MTE" developer options button as
described in
https://source.android.com/docs/security/memory-safety/bootloader-support
Bug: 242244112
Test: * all _fullmte products define arm64.memtag.bootctl_supported.
* other products do not define arm64.memtag.bootctl_supported.
* non-fullmte products support "Reboot with MTE" flow as per the
link above.
Change-Id: Ic0e301755fb6745be55b2fb502b530495bef4ca0