Overclock: add ultimate edition to allow quadcore up to 1.55 GHz

Also add Tegra3 Gaming Fix to disallow 1 single core to have higher
frequecy than rest

Conflicts:

	arch/arm/mach-tegra/Kconfig

Conflicts:
	arch/arm/mach-tegra/Kconfig
overclock: boost ultimate from 1.55 quad to 1.6 quad

also boost the dot pixel clock from 68MHz to 85MHz
Overclocking: enable CPU overclocking

this is done via speedo id hax by forcing Nexus 7 Tegra3  to identify as
AP33 variant instead of as T33

Conflicts:
	arch/arm/mach-tegra/Kconfig
Makefile, kconfig: update to carcosa-a25