add man7 to subdirs list

The man dir misses the man7 as a subdir which means none of the pages
get installed.

URL: https://bugs.gentoo.org/451166
Reported-by: Marcin Mirosław <bug@mejor.pl>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/man/Makefile b/man/Makefile
index 67fea05..9a60fa7 100644
--- a/man/Makefile
+++ b/man/Makefile
@@ -2,7 +2,7 @@
 INSTALLDIR=install -m 0755 -d
 INSTALLMAN=install -m 0644
 
-SUBDIRS = man3 man8
+SUBDIRS = man3 man7 man8
 
 all:
 	@for subdir in $(SUBDIRS); do $(MAKE) -C $$subdir; done
diff --git a/man/man7/Makefile b/man/man7/Makefile
new file mode 100644
index 0000000..ccfd839
--- /dev/null
+++ b/man/man7/Makefile
@@ -0,0 +1,13 @@
+MAN7PAGES = tc-hfsc.7
+
+all:
+
+distclean: clean
+
+clean:
+
+install:
+	$(INSTALLDIR) $(DESTDIR)$(MANDIR)/man7
+	$(INSTALLMAN) $(MAN7PAGES) $(DESTDIR)$(MANDIR)/man7
+
+.PHONY: install clean distclean