kernel: Fix for ALSA driver crash
See: https://github.com/raspberrypi/linux/issues/621

kernel: hid: Reduce default mouse polling interval to 60Hz
See: http://www.raspberrypi.org/forums/viewtopic.php?t=75365&p=556534#p540272

firmware: gpioman: Add support for configuring gpio from external blob file

firmware: Backport latest VCSM

firmware: arm_loader: Add extended command line parameters before filling in device tree
See: https://github.com/raspberrypi/linux/issues/627

firmware: bplus: Support config option max_usb_current
See: http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=81736&start=50#p577877

firmware: bplus: Invert left/right channels for pwm audio on bplus