defconfigs: modify more to match matr1x
Revert "add 533 GPU OC"

This reverts commit da4fadc13ac844a48c51722e914d83704ccc34be.
Revert "Readinclude/linux: Lower default max_readahead value"

This reverts commit 469d970a1bf55519cc24e8626315515ae9a05221.
Revert "Better GPU overclock, including 400MHz, modified bw, up to 533mhz"

This reverts commit b2d06f592ccfd132f58d2f4a711c7cbd08235946.
Revert "mm: decrease swappiness"

This reverts commit 2e00760998305c3927634d9d9b98c2d5545eb694.
Revert "Add 81mhz frequency (testing)"

This reverts commit ec58e348da7d64d3c8e6359b1dc8f1fe02e827b4.