musl: create a xbps.d(5) architecture override conf file.

srcpkgs/musl/template

@@ -1,7 +1,7 @@
 # Template file for 'musl'.
 pkgname=musl
 version=1.1.5
-revision=6
+revision=7
 build_style=gnu-configure
 configure_args="--prefix=/usr --disable-gcc-wrapper"
 conflicts="glibc>=0"
@@ -34,4 +34,8 @@ do_install() {
 	vbin getconf
 	vman ${FILESDIR}/getconf.1
 	vbin ${FILESDIR}/ldconfig
+	# Create xbps.d(5) arch override file
+	vmkdir usr/share/xbps.d
+	echo "architecture=${XBPS_TARGET_MACHINE}-musl" > ${DESTDIR}/usr/share/xbps.d/musl-arch.conf
+
 }