Revert "Read something that sounded like cortex-a8 might be a closer mcpu target"

This reverts commit 7840f95911a7eb9b05f16ec55bf6ba2dd6c40084.
Revert "    Tune deadline, readahead, ondemand, interactive."

This reverts commit 5d5898d5ce92060a9ed08a1806bc1e16c39036fa.
Revert "remove tracing, fix piggy, tune build"

This reverts commit 33bbefc26ea940a8508bfbf00d6befac75f4b2f8.