configure: Enable seccomp sandbox for MIPS

Enable seccomp on MIPS since libseccomp version 2.2.0 when MIPS support
was first added.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Acked-by: Eduardo Otubo <eduardo.otubo@profitbricks.com>
diff --git a/configure b/configure
index 5db29f0..f1c307b 100755
--- a/configure
+++ b/configure
@@ -1872,6 +1872,9 @@
     i386|x86_64)
         libseccomp_minver="2.1.0"
         ;;
+    mips)
+        libseccomp_minver="2.2.0"
+        ;;
     arm|aarch64)
         libseccomp_minver="2.2.3"
         ;;