ssa.c: Add support for PRDB dumping via prdb_dump option

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
core.c: Add support for prdb_dump option

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
distrib.c: Add support for prdb_dump option

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
ibssa_opts.cfg: In both plugin and core, add prdb_dump option

Signed-off-by: Hal Rosenstock <hal@mellanox.com>