package/erlang: support building on aarch64

Erlang has good support for aarch64 hosts, and this allows it to be
built without a warning.

Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/erlang/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_HOST_ERLANG_ARCH_SUPPORTS
 	bool
+	default y if BR2_HOSTARCH = "aarch64"
 	default y if BR2_HOSTARCH = "x86_64"
 	default y if BR2_HOSTARCH = "x86"