package/pipewire: install systemd services when using systemd

Also create a pipewire user, which is used for systemd service. There is
no sysvinit start script at the moment, but if there were, it should
also take care of changing the uid to pipewire before starting the
daemon.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/pipewire/pipewire.mk

@@ -49,10 +49,16 @@ PIPEWIRE_CONF_OPTS += -Dgstreamer=disabled
 endif
 
 ifeq ($(BR2_PACKAGE_SYSTEMD),y)
-PIPEWIRE_CONF_OPTS += -Dsystemd=enabled
+PIPEWIRE_CONF_OPTS += \
+	-Dsystemd=enabled \
+	-Dsystemd-system-service=enabled \
+	-Dsystemd-user-service=enabled
 PIPEWIRE_DEPENDENCIES += systemd
 else
-PIPEWIRE_CONF_OPTS += -Dsystemd=disabled
+PIPEWIRE_CONF_OPTS += \
+	-Dsystemd=disabled \
+	-Dsystemd-system-service=disabled \
+	-Dsystemd-user-service=disabled
 endif
 
 ifeq ($(BR2_PACKAGE_ALSA_LIB),y)
@@ -150,4 +156,8 @@ else
 PIPEWIRE_CONF_OPTS += -Decho-cancel-webrtc=disabled
 endif
 
+define PIPEWIRE_USERS
+	pipewire -1 pipewire -1 * - - - PipeWire System Daemon
+endef
+
 $(eval $(meson-package))