main/postmarketos-mkinitfs: provide only a virtual package (MR 3228)

Fixes 02dfe83c4b

The previous `provides="mkinifs=3.6.0"` was a requirement because alpine's
kernels had a minimum dependency in `mkinitfs>=3.6.0` to make sure that
support for compressed modules existed. That requirement is no longer
in place[1], since the dependency is now on the `initramfs-generator`
virtual package. Also, since `initramfs-generator` is a virtual package
and not a real package, versioning it might mess up APK. The documentation
explictly states that virtual packages are those with unversioned provides
and a provider_priority. So to avoid having problems in the future, let's
strictly stick to it.

[1] https://gitlab.alpinelinux.org/alpine/aports/-/commit/4fac61c826cac81af72e095b645098900d3094a1

main/postmarketos-mkinitfs/APKBUILD

@@ -2,7 +2,7 @@
 # Co-Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-mkinitfs
 pkgver=1.4.1
-pkgrel=7
+pkgrel=8
 pkgdesc="Tool to generate initramfs images for postmarketOS"
 url="https://postmarketos.org"
 depends="
@@ -35,7 +35,7 @@ install="$pkgname.post-upgrade"
 arch="all"
 license="GPL-2.0-or-later"
 provider_priority=999  # higher priority than Alpine's mkinitfs
-provides="mkinitfs=3.6.1 initramfs-generator=3.6.1"
+provides="initramfs-generator"
 
 export GOPATH="$srcdir"
 export CGO_ENABLED=0