checkpatch not warning for some split strings

[Joe Perches <joe@perches.com>]

Hey Josh.

Back when you added commit ca56dc098ca
("checkpatch: check for quoted strings broken across lines")

You added this test case:

    Test case:
    
    void context(void)
    {
        struct { unsigned magic; const char *strdata; } foo[] = {
                { 42, "these strings"
                      "do not produce warnings" },
                { 256, "though perhaps"
                       "they should" },
        };

which avoids emitting a warning on split strings across
multiple lines without a function-call like '(' use on
the line above.

Perhaps the "\(" test should be removed as checkpatch
doesn't emit a warning for some uses like:

diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c
[]
@@ -1868,7 +1865,8 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
                /* Else poor success; go back to mode in "active" table */
                } else {
                        IWL_DEBUG_RATE(mvm,
-                                      "LQ: GOING BACK TO THE OLD TABLE suc=%d cur-tpt=%d old-tpt=%d\n",
+                                      "GOING BACK TO THE OLD TABLE: SR %d "
+                                      "cur-tpt %d old-tpt %d\n",
                                       window->success_ratio,
                                       window->average_tpt,
                                       lq_sta->last_tpt);