sound: fix ym2612 freq latch
authornotaz <notasas@gmail.com>
Fri, 12 Jan 2024 00:23:31 +0000 (02:23 +0200)
committeririxxxx <31696370+irixxxx@users.noreply.github.com>
Fri, 12 Jan 2024 20:34:19 +0000 (21:34 +0100)
commit68e06234e3beb9c252efbb7af8aae76cff313271
tree5208f5d5712fa318847ef7101abcd5f1f009f725
parentca980e1b0a60cc459f96fbf36e6ee837d25d2c9e
sound: fix ym2612 freq latch

there is only a single register, as described in:
http://www.mjsstuf.x10host.com/pages/vgmPlay/vgmPlay.htm
pico/sound/ym2612.c
pico/sound/ym2612.h