linux-pine64-pinetab2: run default_prepare after manual patch handling

Otherwise any patches that need to be applied onto the out-of-tree code
in the patch archive will fail to apply as the files won't exist yet.
This works because delaying default_prepare also delays abuild's
automatic patch application.

Signed-off-by: Stefan Hansson <newbyte@postmarketos.org>
Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/9027>

device/testing/linux-pine64-pinetab2/APKBUILD

@@ -40,12 +40,12 @@ builddir="$srcdir/linux-$pkgver"
 _outdir="out"
 
 prepare() {
-	default_prepare
-
 	# Decrunch the patch file and apply it to the tree
 	zstd -d "$(readlink $srcdir/$_tags.patch.zst)" -o "$srcdir/$_tags.patch"
 	patch -p1 -i "$srcdir/$_tags.patch"
 
+	default_prepare
+
 	cp "$srcdir/config-$_flavor.$CARCH" .config
 }