update alsa package to newest to support UCM.

media-sound/alsa-headers/alsa-headers-1.0.24.ebuild

+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/media-sound/alsa-headers/alsa-headers-1.0.24.ebuild,v 1.1 2011/02/05 23:55:34 chainsaw Exp $
+
+EAPI="3"
+
+inherit base
+
+MY_PN=${PN/headers/driver}
+MY_P="${MY_PN}-${PV/_rc/rc}"
+S="${WORKDIR}/${MY_P}"
+
+DESCRIPTION="Header files for Advanced Linux Sound Architecture kernel modules"
+HOMEPAGE="http://www.alsa-project.org/"
+SRC_URI="mirror://alsaproject/driver/${MY_P}.tar.bz2"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sh ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos"
+IUSE=""
+
+DEPEND=""
+RDEPEND=""
+
+RESTRICT="binchecks strip"
+
+PATCHES=(
+        "${FILESDIR}/${PN}-1.0.6a-user.patch"
+)
+
+# Remove the sound symlink workaround...
+pkg_setup() {
+        if [[ -L ${EROOT}usr/include/sound ]]; then
+                rm      "${EROOT}usr/include/sound"
+        fi
+}
+
+src_configure() { :; }
+
+src_compile() { :; }
+
+src_install() {
+        cd "${S}/alsa-kernel/include"
+        insinto /usr/include/sound
+        doins *.h || die "include failed"
+}