Normally, platform-specific note types in the toolchain are prefixed
with the platform name. Because we're exposing the NT_TYPE_MEMTAG and
synthesizing the note in the toolchain in an upcoming patch
(https://reviews.llvm.org/D118948), it's been requested that we change
the name to include the platform prefix.
While NT_TYPE_IDENT and NT_TYPE_KUSER aren't known about or synthesized
by the toolchain, update those references as well for consistency.
Bug: N/A
Test: Build Android
Change-Id: I7742e4917ae275d59d7984991664ea48028053a1
93400371f7