manually patch fm:

add
CONFIG_NETDEVICES => CONFIG_NET
add constraint to approx.fm to avoid #error

add constraint:
CONFIG_SCSI => CONFIG_BLOCK
manually patch incorrect kbuild extraction for pc/filelist
no longer use open-feature list for generating pcs

the problem is that this leads to dead files if there are mandatory (not open) features as it simply assumes all nonopen features are dead
fix architecture list