Fix typo "permutaion" in vect_grouped_store_supported.

[Prathamesh Kulkarni]

Committed as obvious in r263819.

Regards,
Prathamesh

2018-08-23  Prathamesh Kulkarni  <prathamesh.kulka...@linaro.org>

        * tree-vect-data-refs.c (vect_grouped_store_supported): Fix typo
        "permutaion".

diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index d70d207c7d2..909728919c7 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -5154,7 +5154,7 @@ vect_grouped_store_supported (tree vectype, unsigned 
HOST_WIDE_INT count)
 
   if (dump_enabled_p ())
     dump_printf (MSG_MISSED_OPTIMIZATION,
-                "permutaion op not supported by target.\n");
+                "permutation op not supported by target.\n");
   return false;
 }