Revert "changed gpu oc sysfs to correspond to new freq"

This reverts commit 10ccef888d9163ea93ce5fa405431918d4ffd4e2.
Revert "Changed GPU onload freq from 307,384,512Mhz to 384,460,537Mhz respectivly"

This reverts commit e2c311ae0809282d5ac2866fcdc5deb1b6ac9c43.