acrn-bridge: improve systemd network units

To be sorted in lexical order let's add a 50- prefix to the systemd
network units files.

Now these systemd network units will be processed before the other units
prefixed by 80-. And the first (in lexical order) of the network files
that matches a given device is applied, all later files are ignored,
even if they match as well.

Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Acked-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>

Author: miguelinux

tools/acrnbridge/Makefile

@@ -10,7 +10,7 @@ all:
 
 install:
 	install -d $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network
-	install -p -D -m 0644 $(OUT_DIR)/acrn.netdev $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network
-	install -p -D -m 0644 $(OUT_DIR)/acrn.network $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network
-	install -p -D -m 0644 $(OUT_DIR)/acrn_tap0.netdev $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network
-	install -p -D -m 0644 $(OUT_DIR)/eth.network $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network
+	install -p -D -m 0644 $(OUT_DIR)/acrn.netdev $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network/50-acrn.netdev
+	install -p -D -m 0644 $(OUT_DIR)/acrn.network $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network/50-acrn.network
+	install -p -D -m 0644 $(OUT_DIR)/acrn_tap0.netdev $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network/50-acrn_tap0.netdev
+	install -p -D -m 0644 $(OUT_DIR)/eth.network $(DESTDIR)/$(SYSTEMD_NETWORKDIR)/systemd/network/50-eth.network