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-camera.rules

@@ -0,0 +1,9 @@
+# do not edit this file, it will be overwritten on update
+
+ACTION=="remove", GOTO="camera_end"
+
+SUBSYSTEM=="video4linux", ENV{ID_BUS}="usb" , \
+  IMPORT{builtin}="hwdb 'camera:usb:v$env{ID_VENDOR_ID}p$env{ID_MODEL_ID}:name:$attr{name}:'", \
+  GOTO="camera_end"
+
+LABEL="camera_end"