meta-google: gbmc-ncsi-config: Derive IP from RA

Our end2end DHCP solution is not yet working, but we need a way to
derive addresses for a BMC from the smart NIC in front of it. This
provides a mechanism for detecting the address from RA beacons the NIC
is sending.

Change-Id: I0cdc8c192974c0b00257ebe58e911e62636e4c81
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-google/ncsi/files/50-gbmc-ncsi.rules.in b/meta-google/recipes-google/ncsi/files/50-gbmc-ncsi.rules.in
index f712720..e2ade6e 100644
--- a/meta-google/recipes-google/ncsi/files/50-gbmc-ncsi.rules.in
+++ b/meta-google/recipes-google/ncsi/files/50-gbmc-ncsi.rules.in
@@ -8,6 +8,7 @@
     }
     chain ncsi_gbmc_br_pub_input {
         jump gbmc_br_pub_input
+        jump ncsi_legacy_input
         reject
     }
     chain gbmc_br_pub_input {