Fix kernel-tags target.

- A depend-file is broken up into .depend.*.o files. [1]
  - Fix an assembly file support.

PR:		241746
Submitted by:	leres [1]
MFC after:	1 week

sys/conf/kern.post.mk

@@ -389,7 +389,8 @@ kernel-cleandepend: .PHONY
 	rm -f .depend .depend.* ${_ILINKS}
 
 kernel-tags:
-	@[ -f .depend ] || { echo "you must make depend first"; exit 1; }
+	@ls .depend.* > /dev/null 2>&1 || \
+	    { echo "you must make depend first"; exit 1; }
 	sh $S/conf/systags.sh
 
 kernel-install: .PHONY

sys/conf/systags.sh

@@ -39,14 +39,14 @@
 
 rm -f tags tags.tmp tags.cfiles tags.sfiles tags.hfiles
 sed -e "s, machine/, ../../include/,g" \
-	-e 's,[a-z][^/    ]*/\.\./,,g' .depend | awk '{
+	-e 's,[a-z][^/    ]*/\.\./,,g' .depend.* | awk '{
 		for (i = 1; i <= NF; ++i) {
 			t = substr($i, length($i) - 1)
 			if (t == ".c")
 				cfiles[$i] = 1;
 			else if (t == ".h")
 				hfiles[$i] = 1;
-			else if (t == ".s")
+			else if (t == ".s" || t == ".S")
 				sfiles[$i] = 1;
 		}
 	};