main/postmarketos-initramfs: start mdev/udev before setting up USB

There might be additional kernel modules needed for the USB UDC to show up. This used to work fine, but broke when the initramfs was unified with the minimal one. We need to load modules/start udev before setting up USB.

Fix this by duplicating the setup calls in both init.sh and init_2nd.sh. Both calls already have checks to allow calling them multiple times, so we don't need to handle the initramfs-extra case in a special way.

Cc: @caleb @craftyguy @TravMurav

main/postmarketos-initramfs/APKBUILD

 # Maintainer: Caleb Connolly <caleb@postmarketos.org>
 # Co-Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-initramfs
-pkgver=3.4.5
+pkgver=3.4.6
 pkgrel=0
 pkgdesc="Base files for the postmarketOS initramfs / initramfs-extra"
 url="https://postmarketos.org"
@@ -105,9 +105,9 @@ sha512sums="
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-966284e8ef8f840258a84019db4a6ddd436cdc50193e0673532f70fef86a6e4c1bfd21b682f3708251b6b670ca569c90016926d0926babc5a0257bb33ae55d79  init.sh
+c497ace6f3d183c48722b9e4fd2b6fed21338d68a9e729c1423d3c3de3eaae7366d8dd75a11f78b7072a6795dcc5380c10d8b390738372ede6dc78074ae87a76  init.sh
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-18a0ca97bca094aeb8cb1c2582205ac0aff131085c39f1715246541cacfb35434aba515cd5d338703843efb36b9effd494a51361c51fb39be6052ad866346d3d  init_2nd.sh
+8be2d5876629365e20b1daf9faabe28b038f330d20cc4ea6b95aa400279e56117e3c4b034b9b71d3c5c9a26c18dc3398013151ab3b8e92f9c994558c227fb608  init_2nd.sh
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 675e7d5bee39b2df7d322117f8dcaccc274d61beaf4d50ead19bbf2109446d64b1c0aa0c5b4f9846eb6c1c403418f28f6364eff4537ba41120fbfcbc484b7da7  mdev.conf
 ba3275a9af788c7c782322a22a0f144d5e50e3498ea6886486a29331f23ae89cd32d500a3635cfa7cab369afba92edc18aeca64ccbf0cd589061cce23d15b46c  unudhcpd.conf