target-arm: Correct a comment refering to EL0

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1398926097-28097-5-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
index 57e7d9c..fb90676 100644
--- a/target-arm/op_helper.c
+++ b/target-arm/op_helper.c
@@ -418,7 +418,7 @@
             goto illegal_return;
         }
         if (new_el == 0 && (spsr & PSTATE_SP)) {
-            /* Return to EL1 with M[0] bit set */
+            /* Return to EL0 with M[0] bit set */
             goto illegal_return;
         }
         env->aarch64 = 1;