meta-ampere: mtjade: enable IPMI on eth1

NCSI was enabled in Mt.Jade device tree. This makes the RGMII port is
now eth1. However, just eth0 is enabled for IPMI OOB so running IPMI
OOB command is fail with RGMII's IP address.
This commit sets eth1 as default Ethernet port for IPMI OOB command and
set eth0 as alternative IPMI OOB port.

Tested:
1. Run IPMI commands from client with RGMII's IP address
$ ipmitool -U root -P 0penBmc -C 17 -I lanplus -H 10.38.64.72 power status
Chassis Power is on

Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: Iba65221b8cab99486d1f35026e0cf593cce4a8c9
diff --git a/meta-ampere/meta-jade/recipes-phosphor/ipmi/phosphor-ipmi-net_%.bbappend b/meta-ampere/meta-jade/recipes-phosphor/ipmi/phosphor-ipmi-net_%.bbappend
new file mode 100644
index 0000000..3380271
--- /dev/null
+++ b/meta-ampere/meta-jade/recipes-phosphor/ipmi/phosphor-ipmi-net_%.bbappend
@@ -0,0 +1,7 @@
+DEFAULT_RMCPP_IFACE = "eth1"
+
+ALT_RMCPP_IFACE = "eth0"
+SYSTEMD_SERVICE_${PN} += " \
+        ${PN}@${ALT_RMCPP_IFACE}.service \
+        ${PN}@${ALT_RMCPP_IFACE}.socket \
+        "