There are too few registers to warrant a dedicated file for LPE audio
regs, but the audio reg file is better than i915_reg.h.

v2: Rebase
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b5ee35309b2e0905aaa12d944b3d379c45a8a0bd.1714128645.git.jani.nikula@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>