As an end user, it can be confusing to request an arbitrary IO port be
used only to find out that it doesn't work without an obvious reason,
especially since /sys/module/snd_ymfpci/parameters/{fm,joystick,mpu}_port
indicate 0 after the module has been loaded.

In my case, I was unaware that the YMF724 did not support such usage, and
thus ended up spending time attempting to debug the issue.

Now, when a user attempts to request an IO port that isn't supported by
the hardware, the following message is printed:

[   25.549530] snd_ymfpci 0000:06:05.0: The Yamaha DS-1 (YMF724F) does not support arbitrary IO ports for FM (requested 0x1234)
Signed-off-by: Tasos Sahanidis <tasos@tasossah.com>
Link: https://lore.kernel.org/r/20230329034204.171901-1-tasos@tasossah.comSigned-off-by: Takashi Iwai <tiwai@suse.de>