add missing powerpc man dirs

src/etc/mtree/4.4BSD.dist

@@ -1,4 +1,4 @@
-#	$OpenBSD: 4.4BSD.dist,v 1.58 1998/10/01 17:50:47 beck Exp $
+#	$OpenBSD: 4.4BSD.dist,v 1.59 1998/10/03 20:54:21 millert Exp $
 
 /set type=dir uname=root gname=wheel mode=0755
 # .
@@ -978,16 +978,16 @@ pc532
 # ./usr/share/man/cat4/pc532
 ..
 
-# ./usr/share/man/cat4/powerpc
-powerpc
-# ./usr/share/man/cat4/powerpc
-..
-
 # ./usr/share/man/cat4/pmax
 pmax
 # ./usr/share/man/cat4/pmax
 ..
 
+# ./usr/share/man/cat4/powerpc
+powerpc
+# ./usr/share/man/cat4/powerpc
+..
+
 # ./usr/share/man/cat4/sparc
 sparc
 # ./usr/share/man/cat4/sparc
@@ -1195,6 +1195,11 @@ pmax
 # ./usr/share/man/man4/pmax
 ..
 
+# ./usr/share/man/man4/powerpc
+powerpc
+# ./usr/share/man/man4/powerpc
+..
+
 # ./usr/share/man/man4/sparc
 sparc
 # ./usr/share/man/man4/sparc