Add SupraExpress 336i PnP Voice Modem
Tested and working with the following device: (output from lspnp -v)
01:01.00 SUP1381 (unknown)
    state = active
	io 0x2f8-0x2ff
	irq 3
Signed-off-by: Daniel Gagnon <daniel.gagnon@yahoo.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
        {       "RSS0250",              0       },
        /* SupraExpress 28.8 Data/Fax PnP modem */
        {       "SUP1310",              0       },
+       /* SupraExpress 336i PnP Voice Modem */
+       {       "SUP1381",              0       },
        /* SupraExpress 33.6 Data/Fax PnP modem */
        {       "SUP1421",              0       },
        /* SupraExpress 33.6 Data/Fax PnP modem */