s390x: Don't use a linker script for user-only.

The default placement of the application at 0x80000000 is fine,
and will avoid the default placement for most other guests.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/configure b/configure
index fa7f299..927e104 100755
--- a/configure
+++ b/configure
@@ -2763,6 +2763,9 @@
     # -static is used to avoid g1/g3 usage by the dynamic linker
     ldflags="$linker_script -static $ldflags"
     ;;
+  alpha | s390x)
+    # The default placement of the application is fine.
+    ;;
   *)
     ldflags="$linker_script $ldflags"
     ;;