Switch to new split source package format

pkg.info

@@ -1,8 +1,16 @@
 name: linux-firmware
 description: Base source package for all linux firmware files
 version: 20240709
-revision: 2
+revision: 3
 url: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
 license: See /usr/share/licenses/linux-firmware/
 architecture: any
 type: source
+make_depends: ["rdfind"]
+split_packages:
+  - name: linux-firmware-amd
+    description: AMD CPU and GPU microcode
+  - name: linux-firmware-intel
+    description: Intel CPU and GPU microcode
+  - name: linux-firmware-nvidia
+    description: Nvidia GPU microcode