package/acpid: add systemd service

This one is based on Archlinux's service file.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/acpid/acpid.mk

@@ -10,6 +10,14 @@ ACPID_SITE = http://downloads.sourceforge.net/project/acpid2
 ACPID_LICENSE = GPL-2.0+
 ACPID_LICENSE_FILES = COPYING
 
+define ACPID_INSTALL_INIT_SYSTEMD
+	$(INSTALL) -D -m 0755 package/acpid/acpid.service \
+		$(TARGET_DIR)/usr/lib/systemd/system/acpid.service
+	mkdir -p $(TARGET_DIR)/etc/systemd/system/multi-user.target.wants
+	ln -sf ../../../../usr/lib/systemd/system/acpid.service \
+		$(TARGET_DIR)/etc/systemd/system/multi-user.target.wants/acpid.service
+endef
+
 define ACPID_INSTALL_INIT_SYSV
 	$(INSTALL) -D -m 0755 package/acpid/S02acpid \
 		$(TARGET_DIR)/etc/init.d/S02acpid

package/acpid/acpid.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=ACPI event daemon
+Documentation=man:acpid(8)
+
+[Service]
+ExecStart=/usr/sbin/acpid --foreground --netlink
+
+[Install]
+WantedBy=multi-user.target