profiles/all-hardware.nix: Add vc4 for broadcom hardware

Namely, early KMS on raspberry pi

Changed files
+4
nixos
modules
profiles
+4
nixos/modules/profiles/all-hardware.nix
···
# PWM for the backlight
"pwm-sun4i"
+
+
# Broadcom
+
+
"vc4"
] ++ lib.optionals pkgs.stdenv.isAarch64 [
# Most of the following falls into two categories:
# - early KMS / early display