package/linuxptp adapt to systemctl preset-all

linuxptp has two services
* linuxptp.service : the actual daemon
* linuxptp-system-clock.service : sync the linux clock to the phc clock

The first was enabled, the second was not, we now enable both

The second has an incorrect (though harmless) WantedBy : there is an
explicit Wants= in linuxptp.service

Signed-off-by: Jérémy Rosen <jeremy.rosen@smile.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/linuxptp/linuxptp-system-clock.service

@@ -8,4 +8,3 @@ Restart=always
 
 [Install]
 WantedBy=multi-user.target
-WantedBy=linuxptp.service

package/linuxptp/linuxptp.mk

@@ -42,9 +42,6 @@ define LINUXPTP_INSTALL_INIT_SYSTEMD
 		$(TARGET_DIR)/usr/lib/systemd/system/linuxptp.service
 	$(INSTALL) -D -m 644 $(LINUXPTP_PKGDIR)/linuxptp-system-clock.service \
 		$(TARGET_DIR)/usr/lib/systemd/system/linuxptp-system-clock.service
-	mkdir -p $(TARGET_DIR)/etc/systemd/system/multi-user.target.wants
-	ln -sf ../../../../usr/lib/systemd/system/linuxptp.service \
-		$(TARGET_DIR)/etc/systemd/system/multi-user.target.wants/linuxptp.service
 endef
 
 $(eval $(generic-package))