Revert "gralloc: Allow unmapping concurrent handles"

This reverts commit a3a9aaa5bbf0a94f1039e3eda368fa8a28ddecf8.
gralloc: Attribute buffer ownership to last caller

Switch buffer management from creator to latest registrant

Change-Id: If6b1ab1a553f701e4a1038c089f2b2ecb02c2e8b
add 1c:99:4c as murata mac

Change-Id: I0e60940524f7e4ef652cdb2a625507d1f983b6dc