GPU fixes from faux123

Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: flar2 <asegaert@gmail.com>
Revert "add 409.5MHz GPU freq"

This reverts commit c26360ff5672cbf7858885e43383139fb80d684e.
Revert "Re-Add Graphics boost"

This reverts commit 2618f03d32be72191dcf52a7f4c2515cbb562935.
Revert " new gpu oc method"

This reverts commit c929bb652f90f68b720d8de23082b90c80ca34e2.
Revert "add more GPU frequencies and adjust scaling"

This reverts commit f5beb15bf8d2692e90101e85fd42564dd7c3bcdf.