checkpatch: change blank line after declaration type to "LINE_SPACING"

Make it consistent with the other missing or multiple blank line tests.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -2353,7 +2353,7 @@ sub process {
 		      $sline =~ /^\+\s+\(?\s*(?:$Compare|$Assignment|$Operators)/) &&
 			# indentation of previous and current line are the same
 		    (($prevline =~ /\+(\s+)\S/) && $sline =~ /^\+$1\S/)) {
-			WARN("SPACING",
+			WARN("LINE_SPACING",
 			     "Missing a blank line after declarations\n" . $hereprev);
 		}