device-google-oak: depend on postmarketos-initramfs-minimal

Fixes #2914 (closed)

Proposing to make the oak chromebook use minimal initramfs. I've installed it on my own c330 and it does indeed fix the issue.

device/community/device-google-oak/APKBUILD

@@ -4,7 +4,7 @@
 pkgname=device-google-oak
 pkgdesc="Google Oak Chromebooks"
 pkgver=4
-pkgrel=6
+pkgrel=7
 url="https://postmarketos.org"
 license="MIT"
 arch="aarch64"
@@ -15,6 +15,7 @@ depends="
 	linux-postmarketos-mediatek-mt8173
 	postmarketos-base
 	postmarketos-cros-common
+	postmarketos-initramfs-minimal
 "
 makedepends="devicepkg-dev"
 source="deviceinfo modules-initfs"