linux/common-config: enable RT1308 sound support module

[workflow]

This module is required for working internal speakers on some versions of the Dell XPS 9700, possibly other laptops.

Upstreaming it removes the need for kernel rebuilds for these laptop users.

See #130882

Review ping: @Mic92 @tobiasBora

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[Tungsten842]

This is already enabled in the default kernel config:

❯ cat $(nix build nixpkgs\#linux.configfile --print-out-paths) | grep SND_SOC_RT1308
CONFIG_SND_SOC_RT1308=m
CONFIG_SND_SOC_RT1308_SDW=m

❯ cat $(nix build nixpkgs\#linux_6_8.configfile --print-out-paths) | grep SND_SOC_RT1308
CONFIG_SND_SOC_RT1308=m
CONFIG_SND_SOC_RT1308_SDW=m

❯ cat $(nix build nixpkgs\#linux_6_6.configfile --print-out-paths) | grep SND_SOC_RT1308
CONFIG_SND_SOC_RT1308=m
CONFIG_SND_SOC_RT1308_SDW=m

❯ cat $(nix build nixpkgs\#linux_6_1.configfile --print-out-paths) | grep SND_SOC_RT1308
CONFIG_SND_SOC_RT1308=m
CONFIG_SND_SOC_RT1308_SDW=m

❯ cat $(nix build nixpkgs\#linux_5_15.configfile --print-out-paths) | grep SND_SOC_RT1308
CONFIG_SND_SOC_RT1308=m
CONFIG_SND_SOC_RT1308_SDW=m

[workflow]

Indeed, thank you, I must've been smoking something funky when I grepped for it.