The APIs that are tagged with # vndk are actually for LLNDK libraries.
Although LLNDK is part of VNDK, calling those APIs 'vndk' has given
users a wrong perception that the APIs don't need to be kept stable
because that's the norm for most of the VNDK libraries that are not
LLNDK.
In order to eliminate the misunderstanding, rename the tag to 'llndk' so
that people introducing new such API will realize what they are signing
themselves up for.
Exempt-From-Owner-Approval: cherry-pick from internal gerrit
Bug: 143765505
Test: m
Merged-In: I7ae77e232ec25cbe7afd98d1b68fc7a7fcf9bdfd
(cherry picked from commit a9258ab2e16669da63ad6a423bb65a11f3ad9a6c)
Change-Id: I7ae77e232ec25cbe7afd98d1b68fc7a7fcf9bdfd
d0c8d9bd22