Build script: add more clean options

Because Bjorn likes it dirty

Change-Id: I6be6bbfffad1734e2db37a1fa62d222e493e23dc
fix serrano devices

Change-Id: I5b31e319be8793e2557a23e1df7eb775d33056ff
Possibly fix build, Fuck knows what happened

Change-Id: I0b2e5e9b6f375fcfaa54ab02d66c1f5bfdec3fa0
Merge remote-tracking branch 'pac/pac-4.4' into pac-4.4