systemd: add required backlight devices to After and BindsTo

Author: soopyc

etc/systemd/system/tiny-dfr.service

@@ -1,7 +1,7 @@
 [Unit]
 Description=Tiny Apple silicon touch bar daemon
-After=systemd-user-sessions.service [email protected] plymouth-quit.service systemd-logind.service
-BindsTo=dev-tiny_dfr_display.device dev-tiny_dfr_backlight.device
+After=systemd-user-sessions.service [email protected] plymouth-quit.service systemd-logind.service dev-tiny_dfr_display.device dev-tiny_dfr_backlight.device dev-tiny_dfr_display_backlight.device
+BindsTo=dev-tiny_dfr_display.device dev-tiny_dfr_backlight.device dev-tiny_dfr_display_backlight.device
 
 [Service]
 ExecStart=/usr/bin/tiny-dfr