Documentation: clarify that patches should target the master branch.
I asked Sascha if he still prefers patches against 'next', and it turned
out that this is not true any more and patches should be sent against
master.
Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>