NOVA 2 - Arm linux
Fix N.O.V.A. 2 audio on muOS Declare the port as 32-bit so muOS loads the correct PipeWire and SPA plugins, and configure the 32-bit ALSA plugin path. This fixes audio being sent to HDMI instead of the handheld speaker. Update the port documentation with the audio setup and troubleshooting details. Confirmed music and game sound work on the RG34XXSP running muOS. Signed-off-by: ronaxdevil <pratabidya.007@gmail.com>