bluetooth: move vnd_hammerhead.txt from libbt/include/ to include/

Change-Id: I0d04354265c3bff464893568642f3e55c701301b
diff --git a/libbt/include/vnd_hammerhead.txt b/include/vnd_hammerhead.txt
similarity index 100%
rename from libbt/include/vnd_hammerhead.txt
rename to include/vnd_hammerhead.txt