meta-google: gbmc-mac-config: Add package

This package allows a system to specify an IPMI FRU that contains MAC
Address information used to populated MAC addresses for specified
interfaces.

Change-Id: I457d41509da0e63db4410937b84140d4ba410b41
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-phosphor/images/obmc-phosphor-image.bbappend b/meta-google/recipes-phosphor/images/obmc-phosphor-image.bbappend
index 37655b9..520aeeb 100644
--- a/meta-google/recipes-phosphor/images/obmc-phosphor-image.bbappend
+++ b/meta-google/recipes-phosphor/images/obmc-phosphor-image.bbappend
@@ -8,3 +8,5 @@
 OBMC_IMAGE_EXTRA_INSTALL_append_gbmc = " gbmc-iperf3"
 OBMC_IMAGE_EXTRA_INSTALL_append_gbmc = \
   '${@"" if not d.getVar("GBMC_NCSI_IF_NAME") else " gbmc-ncsi-config"}'
+OBMC_IMAGE_EXTRA_INSTALL_append_gbmc = \
+  '${@"" if not d.getVar("GBMC_MAC_EEPROM_OF_NAME") else " gbmc-mac-config"}'