Revert "acpuclock-7201: add 800MHz for 7627aa"

This reverts commit 529e0f9e0246d0b99849357cbdbbfdd365c212da.
Revert "u8815: LZO ramdisk"

This reverts commit 1aa4747a798f2db137447fbb1b23d54bd8a275b9.