package/qemu: add IBM s390x and Z arch support

Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/qemu/Config.in.host

@@ -15,6 +15,7 @@ config BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS
 	default y if BR2_powerpc64
 	default y if BR2_powerpc64le
 	default y if BR2_riscv
+	default y if BR2_s390x
 	default y if BR2_sh
 	default y if BR2_sparc
 	default y if BR2_sparc64