daemon/Makefile: Add forgotten dependency

In latest patches we added Admin API. However, the Makefile in daemon
was missing one dependency: admin_server.c is including generated file
admin_dispatch.h. However, this dependency was not explicitly marked
in the Makefile therefore the build happened to fail on some
occasions.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

daemon/Makefile.am

@@ -317,6 +317,7 @@ endif ! WITH_POLKIT
 
 remote.c: $(DAEMON_GENERATED)
 remote.h: $(DAEMON_GENERATED)
+admin_server.c: $(DAEMON_GENERATED)
 
 LOGROTATE_CONFS = libvirtd.qemu.logrotate libvirtd.lxc.logrotate \
 		  libvirtd.libxl.logrotate libvirtd.uml.logrotate \