package/systemd: fix /etc/resolv.conf link on per-package build

Fixes:
 - https://bugs.buildroot.org/show_bug.cgi?id=13271

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/systemd/systemd.mk

@@ -523,8 +523,7 @@ endef
 
 SYSTEMD_POST_INSTALL_TARGET_HOOKS += \
 	SYSTEMD_INSTALL_INIT_HOOK \
-	SYSTEMD_INSTALL_MACHINEID_HOOK \
-	SYSTEMD_INSTALL_RESOLVCONF_HOOK
+	SYSTEMD_INSTALL_MACHINEID_HOOK
 
 define SYSTEMD_INSTALL_IMAGES_CMDS
 	$(SYSTEMD_INSTALL_BOOT_FILES)
@@ -556,7 +555,9 @@ define SYSTEMD_INSTALL_NSSCONFIG_HOOK
 		$(TARGET_DIR)/etc/nsswitch.conf
 endef
 
-SYSTEMD_TARGET_FINALIZE_HOOKS += SYSTEMD_INSTALL_NSSCONFIG_HOOK
+SYSTEMD_TARGET_FINALIZE_HOOKS += \
+	SYSTEMD_INSTALL_NSSCONFIG_HOOK \
+	SYSTEMD_INSTALL_RESOLVCONF_HOOK
 
 ifneq ($(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT)),)
 # systemd provides multiple units to autospawn getty as neede