Revert "Carvsdriver: gpu: kgsl: added missing header"

This reverts commit 05af39db8e634f117dc04f2094cc9daa5e896a4b.
Revert "Carvsdriver: gpu sysfs: making things configurable"

This reverts commit 17dab5457063dbd1d3c7e220d9057e159f71c31c.
Revert "gpu sysfs: initial commit for GPU frequency control"

This reverts commit c4ada3396d49f6844fbb6250ca4c0c2e2293aae9.