main/shutdown-clear-rtc-wakealarm: add openrc subpackage (MR 5364)

[ci:skip-build] already built successfully in CI

main/shutdown-clear-rtc-wakealarm/APKBUILD

@@ -1,20 +1,25 @@
 # Maintainer: Arnav Singh <me@arnavion.dev>
 pkgname=shutdown-clear-rtc-wakealarm
 pkgver=1.0.0
-pkgrel=0
+pkgrel=1
 pkgdesc="Pre-shutdown service to clear RTC wake alarm"
 url="https://wiki.postmarketos.org/wiki/Shutdown-clear-rtc-wakealarm"
 arch="noarch"
 license="MIT"
+subpackages="$pkgname-openrc"
 source="
 	clear-rtc-wakealarm.shutdown.initd
 	"
-install="$pkgname.post-install"
 
 package() {
 	install -Dm755 "$srcdir"/clear-rtc-wakealarm.shutdown.initd "$pkgdir"/etc/init.d/clear-rtc-wakealarm
 }
 
+openrc() {
+	install="$subpkgname.post-install"
+	default_openrc
+}
+
 sha512sums="
 5e19659b9e8d2ab182ea8658a752d08c950c526546864288c5387a3e28f7973baebcf0d49350bfced1387160f4dde963c6f921f5cd4e3730940b88ae3e443cba  clear-rtc-wakealarm.shutdown.initd
 "