linux-user: stack_base is now mandatory on all targets

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index 55ad9d8..30e2abd 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -123,10 +123,10 @@
 #endif
 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
     /* Extra fields for semihosted binaries.  */
-    uint32_t stack_base;
     uint32_t heap_base;
     uint32_t heap_limit;
 #endif
+    uint32_t stack_base;
     int used; /* non zero if used */
     struct image_info *info;
     struct linux_binprm *bprm;