arm-autonomy, xenguest-network-bridge: Set bridge members per machine

By default, XENGUEST_NETWORK_BRIDGE_MEMBERS should be empty and only be
set per machine.

Change-Id: I67c56847eb785279c28757a6052f092c838babe0
Issue-Id: SCM-995
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-autonomy/dynamic-layers/meta-arm-bsp/recipes-extended/xenguest/xenguest-network-bridge.bbappend

@@ -1,2 +1,10 @@
+XENGUEST_NETWORK_BRIDGE_MEMBERS_n1sdp ?= "eth0"
+
+XENGUEST_NETWORK_BRIDGE_MEMBERS_fvp-base ?= "eth0"
+
+XENGUEST_NETWORK_BRIDGE_MEMBERS_foundation-armv8 ?= "eth0"
+
+XENGUEST_NETWORK_BRIDGE_MEMBERS_gem5-arm64 ?= "eth0"
+
 # Juno board has 2 network interfaces, add both of them to the bridge
 XENGUEST_NETWORK_BRIDGE_MEMBERS_juno ?= "eth0 eth1"

meta-arm-autonomy/recipes-extended/xenguest/xenguest-network-bridge.bb

@@ -9,7 +9,11 @@ S = "${WORKDIR}"
 # Please refer to documentation/xenguest-network-bridge.md for documentation on
 # those parameters
 XENGUEST_NETWORK_BRIDGE_NAME ?= "xenbr0"
-XENGUEST_NETWORK_BRIDGE_MEMBERS ?= "eth0"
+
+# The XENGUEST_NETWORK_BRIDGE_MEMBERS should be set in a machine.conf
+# or bbappend file.
+#XENGUEST_NETWORK_BRIDGE_MEMBERS ?= "eth0"
+
 XENGUEST_NETWORK_BRIDGE_CONFIG ?= "xenguest-network-bridge-dhcp.cfg.in"
 
 SRC_URI = " \