packaging: enable only amd64 repository

enable only amd64 repository in sourcelist file shipped in
ring-daemon-repository package.

Refs #71506

Change-Id: Ibfce0879d9fc8c482f44ef9c7a5b515c3548e9ac

debian/rules

@@ -45,7 +45,7 @@ override_dh_auto_install:
 	rm -rf  $(CURDIR)/debian/ring-daemon/usr/include/
 	# Add repository file
 	mkdir -p $(CURDIR)/debian/ring-repository/etc/apt/sources.list.d/
-	echo "deb http://nightly.apt.ring.cx/$(DISTRIB_ID)_$(DISTRIB_VERSION_ID) ring main" > $(CURDIR)/debian/ring-repository/etc/apt/sources.list.d/ring-nightly.list
+	echo "deb [arch=amd64] http://nightly.apt.ring.cx/$(DISTRIB_ID)_$(DISTRIB_VERSION_ID) ring main" > $(CURDIR)/debian/ring-repository/etc/apt/sources.list.d/ring-nightly.list
 	dh_auto_install
 
 get-orig-source: