package/libseccomp: enable s390x support

s390x is supported since version 2.3.0 and
https://github.com/seccomp/libseccomp/commit/02030ce9920181bc1058990ecaefaa754de9ad3a

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libseccomp/Config.in

@@ -5,6 +5,7 @@ config BR2_PACKAGE_LIBSECCOMP_ARCH_SUPPORTS
 	default y if BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
 	default y if BR2_i386 || BR2_x86_64
 	default y if BR2_powerpc64 || BR2_powerpc
+	default y if BR2_s390x
 
 config BR2_PACKAGE_LIBSECCOMP
 	bool "libseccomp"