mach-tegra: platsmp: use gmode_notifier
https://github.com/showp1984/bricked-grouper-3.x/commit/3d5ec7f7321e7f82d4853171f82fddf980cdf797

Conflicts:
	arch/arm/configs/nextmpdec_aosp_defconfig
	arch/arm/configs/nextmpdec_sense_defconfig