fix: Switch to space-separated sources.conf format

- Change from colon to space separation to avoid URL parsing issues
- Update sources.conf format: TYPE NAME URL VERSION BUILD_FUNCTION [EXTRA]
- Implement awk-based parsing for reliable field extraction
- Fix firmware package list (remove unavailable linux-firmware-marvell)

initramfs/usr/lib/udev/rules.d/70-touchpad.rules

@@ -0,0 +1,13 @@
+# do not edit this file, it will be overwritten on update
+
+ACTION=="remove", GOTO="touchpad_end"
+ENV{ID_INPUT}=="", GOTO="touchpad_end"
+ENV{ID_INPUT_TOUCHPAD}=="", GOTO="touchpad_end"
+KERNEL!="event*", GOTO="touchpad_end"
+
+# touchpad:<subsystem>:v<vid>p<pid>:name:<name>:*
+KERNELS=="input*", ENV{ID_BUS}!="", \
+        IMPORT{builtin}="hwdb 'touchpad:$env{ID_BUS}:v$attr{id/vendor}p$attr{id/product}:name:$attr{name}:'", \
+        GOTO="touchpad_end"
+
+LABEL="touchpad_end"