IOMX: Enable buffer ptr to buffer id translation for arm32

Bug: 20634516
Change-Id: Iac9eac3cb251eccd9bbad5df7421a07edc21da0c
(cherry picked from commit 2d6b6601743c3c6960c6511a2cb774ef902759f4)

OMX::buffer_id OMXNodeInstance::findBufferID(OMX_BUFFERHEADERTYPE *bufferHeader) {
 if (bufferHeader == NULL) {
 return 0;
 }
 Mutex::Autolock autoLock(mBufferIDLock);
 return mBufferHeaderToBufferID.valueFor(bufferHeader);
}

OMX::buffer_id OMXNodeInstance::findBufferID(OMX_BUFFERHEADERTYPE *bufferHeader) {
 if (bufferHeader == NULL) {
 return 0;
 }
 Mutex::Autolock autoLock(mBufferIDLock);
 return mBufferHeaderToBufferID.valueFor(bufferHeader);
}
