corosync: Fix PACKAGECONFIG flag for rdma

Fixed:
PACKAGECONFIG_append_pn-corosync = ' rdma'

$ bitbake corosync
| configure: error: Package requirements (rdmacm) were not met:
|
| No package 'rdmacm' found

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-extended/corosync/corosync_2.4.4.bb

@@ -36,7 +36,7 @@ PACKAGECONFIG ??= "${@bb.utils.filter('DISTRO_FEATURES', 'systemd', d)} \
 PACKAGECONFIG[dbus] = "--enable-dbus,--disable-dbus,dbus"
 PACKAGECONFIG[qdevice] = "--enable-qdevices,--disable-qdevices"
 PACKAGECONFIG[qnetd] = "--enable-qnetd,--disable-qnetd"
-PACKAGECONFIG[rdma] = "--enable-rdma,--disable-rdma"
+PACKAGECONFIG[rdma] = "--enable-rdma,--disable-rdma,librdmacm"
 PACKAGECONFIG[snmp] = "--enable-snmp,--disable-snmp,net-snmp"
 PACKAGECONFIG[systemd] = "--enable-systemd --with-systemddir=${systemd_system_unitdir},--disable-systemd --without-systemddir,systemd"