I pointed some folks at this and they wondered why it wasn't in the
kernel Documentation directory. So now it is.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>