Add defines for various FIRST PARTY DMA SEND subcommands.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273445 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Virtual machines can easily have more than 16 option ROMs and
when that happens, we happily access our resource array out of
bounds. Make sure we stay within the MAX_ROMS limit.
While here, bump MAX_ROMS from 16 to 32 to minimize the chance
of leaving option ROMs unaccounted for.

Obtained from:	Juniper Networks, Inc.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273446 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f