SUNRPC: No, I did not intend to create a 256KiB hashtable

Fix the declaration of the gss_auth_hash_table so that it creates
a 16 bucket hashtable, as I had intended.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/auth_gss/auth_gss.c

@@ -75,7 +75,7 @@ static unsigned int gss_key_expire_timeo = GSS_KEY_EXPIRE_TIMEO;
  * using integrity (two 4-byte integers): */
 #define GSS_VERF_SLACK		100
 
-static DEFINE_HASHTABLE(gss_auth_hash_table, 16);
+static DEFINE_HASHTABLE(gss_auth_hash_table, 4);
 static DEFINE_SPINLOCK(gss_auth_hash_lock);
 
 struct gss_pipe {