linux-raspberrypi: update 4.9 recipe to current HEAD
linux-raspberrypi: update 4.9 recipe to current HEAD

Contains the following changes:

    7f9c648dad64 drm/vc4: Move IRQ enable to PM path

which fixes an unbalanced IRQ enable warning, which was rapported
in #286

Signed-off-by: Mirza Krak <a4c4d757f34451a8de50b8bd9f756404095e0d19@northern.tech>
Signed-off-by: Gunnar Andersson <df6c1dc70ee3404c16d7de0a5a8d978b44fa18d4@genivi.org>
Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

leon-anavi/meta-raspberrypi,agherzan/meta-raspberrypi,leon-anavi/meta-raspberrypi,kraj/meta-raspberrypi,schnitzeltony/meta-raspberrypi,schnitzeltony/meta-raspberrypi,kraj/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi,agherzan/meta-raspberrypi,leon-anavi/meta-raspberrypi,agherzan/meta-raspberrypi,kraj/meta-raspberrypi,agherzan/meta-raspberrypi