checkpatch: advertise the --fix and --fix-inplace options more

The --fix option is relatively unknown and underutilized.

Add some text to show that it's available when style defects are found.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -5975,6 +5975,14 @@ sub process {
 	}
 
 	if ($quiet == 0) {
+		# If there were any defects found and not already fixing them
+		if (!$clean and !$fix) {
+			print << "EOM"
+
+NOTE: For some of the reported defects, checkpatch may be able to
+      mechanically convert to the typical style using --fix or --fix-inplace.
+EOM
+		}
 		# If there were whitespace errors which cleanpatch can fix
 		# then suggest that.
 		if ($rpt_cleaners) {