meta-phosphor: mctp: Support raw KCS driver for astlpc binding

Add a PACKAGECONFIG entry for astlpc-raw-kcs to install the required
udev rules.

Change-Id: Ic9fc133d92106aeb72c0ef0af1123c31b1c5c24a
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/meta-phosphor/recipes-phosphor/mctp/mctp_git.bb b/meta-phosphor/recipes-phosphor/mctp/mctp_git.bb
index 1ab55b7..334420c 100644
--- a/meta-phosphor/recipes-phosphor/mctp/mctp_git.bb
+++ b/meta-phosphor/recipes-phosphor/mctp/mctp_git.bb
@@ -23,6 +23,8 @@
 PACKAGECONFIG[systemd] = "--with-systemdsystemunitdir=${systemd_system_unitdir}, \
                           --without-systemdsystemunitdir,systemd"
 
+PACKAGECONFIG[astlpc-raw-kcs] = "--enable-astlpc-raw-kcs,--disable-astlpc-raw-kcs,udev,udev"
+
 CONFFILES_${PN} = "${sysconfdir}/default/mctp"
 
 do_install_append() {