Revert "Add GPU OC to 644 MHz and idle on 120MHz"

This reverts commit 57b587ce57db3d3af1a74fdd5f0f93c5c4373dd6.

Conflicts:

	arch/arm/boot/compressed/piggy.xzkern
GPU: OC to 657MHz, Idle on 27MHz and add 100MHz Step
Disabled Simple GPU Algorithm for Z3 Compact
.gitignore ignore output files