build: add relevant features to KMOD_FEATURES in config.h
build: add relevant features to KMOD_FEATURES in config.h

Not all the features (i.e. those available in --enable-* or --with-*)
are really relevant to the final user. Create a KMOD_FEATURES definition
in config.h containing these features.

Reviewed-by: Andreas Mohr <51ee633d97087113c855ad32931a91c504525a97@users.sf.net>

lucasdemarchi/kmod,lpereira/kmod,pmmccorm/kmod,lucasdemarchi/kmod,Distrotech/kmod,lucasdemarchi/kmod,pmmccorm/kmod,lpereira/kmod,Distrotech/kmod,Distrotech/kmod,lpereira/kmod,pmmccorm/kmod