Revert CPU Overclocking:  This reverts this commit 319c89bd52da0cf760448cdcc2c41d508847524d

Fix build after new changes
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
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
Update grouper defconfigs with latest changes