main/postmarketos-initramfs: support initramfs-extra as gzip

This is a revert of the change introduced in 4eda0715 to support an
uncompressed initramfs-extra. osk-sdl support results in an initramfs-extra
that is too big for some devices with a small (traditional) /boot partition

Also see: #2009

main/postmarketos-initramfs/APKBUILD

 # Maintainer: Oliver Smith <ollieparanoid@postmarketos.org>
 # Co-Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-initramfs
-pkgver=1.0.0
+pkgver=1.0.1
 pkgrel=0
 pkgdesc="Base files for the postmarketOS initramfs / initramfs-extra"
 url="https://postmarketos.org"
@@ -18,7 +18,7 @@ depends="
 	multipath-tools
 	parted
 	postmarketos-fde-unlocker
-	postmarketos-mkinitfs
+	postmarketos-mkinitfs>=2.1
 	unudhcpd
 	xz
 	"
@@ -68,5 +68,5 @@ bed319179bcd0b894d6267c7e73f2890db07bc07df71542936947dfb3bdb17fade8a7b4e7b577f27
 3c47e9169ee8cfe78e1a554cf325962f5425c41a0125dcba8561f377d8c52cbfccdd791b269656478c92604644fb286b1ee8df42db9f5a771657e415da35e619  00-initramfs-base.files
 e984cd3033ce8752ebc71127828b964b46259a5263c2ebfab32c1394b674bcff464862ff00b8e920d3d31386c54ca0b94f84bc77580d275ecfeea33e76c07ef4  00-initramfs-extra-base.files
 347637ba837c75d2e7c5e93b10364de6a784d70067c65dcc3b95277f5feb89fc9b243822022b2380846dd977c4a3f6f96877f547e6ffc7cd3051845d7907d6a1  init.sh
-6978bb42349bc318a4cd8894aff77de05ad3d70345a232e683fdcf98270e71087669d05f750f55256b1af3a3b747ce5e224aa939a43b5c61b9675d9dd44c9080  init_functions.sh
+2a5dc96b38c6dbd079bbab0a296acee42499af3b317b3995abcc89554abd5863558f990caf9dace3a56dd6071cea45c9b0809ed4a26ae679a3cdc6c3adff2057  init_functions.sh
 "

main/postmarketos-initramfs/init_functions.sh

@@ -282,7 +282,9 @@ extract_initramfs_extra() {
 		loop_forever
 	fi
 	echo "Extract $initramfs_extra"
-	cpio -di < "$initramfs_extra"
+	# uncompressed:
+	# cpio -di < "$initramfs_extra"
+	gzip -d -c "$initramfs_extra" | cpio -i
 }
 
 wait_root_partition() {