interrupt to use a different subnumber since both devices could
interrupt at the same time and we don't want to loose one.
dev/tsunami_cchip.cc:
rewrote interrupt code to handle interrupt mask clearing correctly
dev/tsunami_cchip.hh:
changed (post/clear)DRIR to use a interrupt number rather than a vecotr
dev/tsunami_io.cc:
updated for new post/clearDRIR calls
--HG--
extra : convert_revision : 5b39f5e15a66d5eb6e689e6ece62f99b5fa735ab
de5fa66714