linux-raspberrypi: Update to 4.14.87
linux-raspberrypi: Update to 4.14.87

To match 20181211 firmware

Signed-off-by: Pepijn de Vos <3c4afdd4eacec913308195e0cc5bad4538b163ec@gmail.com>

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