main/firmware-sof: restore versioned symlinks

As a matter of fact apk cannot properly transition things because
it broke for me on upgrade (the sof directory just went poof and
there were no files) and there are other people reporting semingly
the same stuff:

https://www.reddit.com/r/chimeralinux/comments/1fxgkbu/audio_doesnt_work_after_installing_pipewire/

Doing the reverse thing results in an error on upgrade, so one
has to run apk fix, but nothing we can do...

main/firmware-sof/template.py

@@ -1,6 +1,6 @@
 pkgname = "firmware-sof"
 pkgver = "2024.09"
-pkgrel = 0
+pkgrel = 1
 archs = ["x86_64"]
 install_if = [self.with_pkgver("base-firmware-sof")]
 pkgdesc = "Sound Open Firmware"
@@ -20,7 +20,8 @@ def install(self):
         "sof-ipc4-tplg",
         "sof-tplg",
     ]:
-        self.install_files(folder, "usr/lib/firmware/intel")
+        self.install_files(folder, "usr/lib/firmware/intel", name=f"{folder}-v{pkgver}")
+        self.install_link(f"usr/lib/firmware/intel/{folder}", f"{folder}-v{pkgver}")
     # compat link, following the default install.sh
     self.install_link("usr/lib/firmware/intel/sof-ace-tplg", "sof-ipc4-tplg")
     self.install_license("LICENCE.NXP")