package/mono: allow building for aarch64 targets

Add aarch64 to BR2_PACKAGE_MONO_ARCH_SUPPORTS to allow building for
aarch64 targets.

Compiles successfully and runs on the actual target (imx8mp based
board)

Signed-off-by: Stefan Mayrhofer <stefan@familie-mayrhofer.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/mono/Config.in

@@ -5,8 +5,8 @@ config BR2_PACKAGE_HOST_MONO_ARCH_SUPPORTS
 
 config BR2_PACKAGE_MONO_ARCH_SUPPORTS
 	bool
-	default y if (BR2_arm || BR2_armeb || BR2_i386 || \
-		      BR2_powerpc || BR2_x86_64)
+	default y if (BR2_aarch64 || BR2_arm || BR2_armeb || \
+		      BR2_i386 || BR2_powerpc || BR2_x86_64)
 	depends on BR2_PACKAGE_HOST_MONO_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_LIBATOMIC_OPS_ARCH_SUPPORTS