dma-buf: move to drivers/dma-buf

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc Documentation/DocBook/device-drivers.tmpl
Simple merge

diff --cc MAINTAINERS
Simple merge

diff --cc drivers/Makefile
Simple merge

diff --cc drivers/base/Makefile
Simple merge

diff --cc drivers/dma-buf/Makefile
Simple merge

diff --cc drivers/dma-buf/dma-buf.c
Simple merge

diff --cc drivers/dma-buf/reservation.c
Simple merge