scu_sw: fixed fg scan function; check if wb_fg is configured
scu2: added 3rd msi queue
scu_sw: increased fg buffer size
scu_sw: activate irqs only for slaves with fgs
scu_sw: irqs serviced only for known slaves
scu_sw and wb_fg_quad: changed wb master for wb_fg output
Merge branch 'stefan-wip-fix' of github.com:stefanrauch/bel_projects into stefan-wip-fix