kernel: Bump to 3.12.33

firmware: Avoid enabling 25MHz ethernet clock on model A+
See: http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=91267&start=25#p639575

firmware: Restructure of hdmi pll adjustment code. Add support for locking to 3:2 cadence (24fps on 60Hz)
kernel: merge upstream and bump to 3.17.4
Merge remote-tracking branch 'upstream/master' into 3.17.y

Conflicts:
	Module.symvers
	git_hash
	kernel.img
	modules/3.12.32+/modules.softdep
	modules/3.12.33+/modules.builtin
	modules/3.12.33+/modules.builtin.bin
	modules/3.12.33+/modules.dep
	modules/3.12.33+/modules.dep.bin
	modules/3.12.33+/modules.devname
	modules/3.12.33+/modules.order
	modules/3.12.33+/modules.softdep
	modules/3.12.33+/modules.symbols
	modules/3.12.33+/modules.symbols.bin
	modules/3.17.4+/modules.softdep