main/postmarketos-ui-lxqt: save and restore brightness on boots (MR 5933)

LXQt can control the display brightness. It doesn't save and restore it
over boots, however. In distributions with systemd this is handled by
"systemd-backlight@.service". For OpenRC the package brightnessctl offers
a service saving the state of the brightness at shutdown and reboot.

main/postmarketos-ui-lxqt/APKBUILD

@@ -2,13 +2,14 @@
 # Maintainer: Antoni Aloy <aaloytorrens@gmail.com>
 pkgname=postmarketos-ui-lxqt
 pkgver=0.3
-pkgrel=4
+pkgrel=5
 pkgdesc="(X11) Lightweight Qt Desktop Environment (stylus recommended)"
 url="https://lxqt-project.org/"
 # armhf: lxqt-desktop not available
 arch="noarch !armhf"
 license="GPL-3.0-or-later"
 depends="
+	brightnessctl
 	dbus-x11
 	dnsmasq
 	elogind
@@ -85,6 +86,7 @@ openrc() {
 	install_if="$pkgname=$pkgver-r$pkgrel openrc"
 	install="$subpkgname.post-install $subpkgname.post-upgrade"
 	depends="
+		brightnessctl-openrc
 		elogind-openrc
 		networkmanager-openrc
 		tinydm-openrc

main/postmarketos-ui-lxqt/postmarketos-ui-lxqt-openrc.post-install

 #!/bin/sh
 
+rc-update add brightnessctl default
 rc-update add elogind default
 rc-update add networkmanager default
 rc-update add tinydm default