Add new clean step for recent vold changes

Vold crashes on a non clobber build after recent changes

Change-Id: I909f5a8b0533f0ad12b69a779038756a296fb4dc
vold: Fix build for minivold and general cleanup

Change-Id: Ibc450dd86b77a0c4a25de08b2f07dfb9b2c70871
vold: Fix uses of board flags

Put LOCAL_CFLAGS += AFTER LOCAL_CFLAGS := ..
Else all flags will be removed/ignored ..
That fixes MAX_PARTITIONS flag usage ..

Change-Id: I96854b7de1eae6a235e8d31f7a9364a680b4f0b6