Add newpcm patch for FreeBSD-4.4 upwards.
PR: 25520 Submitted by: Orion Hodson <oh@btinternet.com
previous pcm driver and newpcm. This replacement port adds newpcm mixer support and brings port up to date with the current rat release (4.2.9). PR: 21333 Submitted by: maintainer
PR: ports/12535 Submitted by: O.Hodson@cs.ucl.ac.uk