ALSA: pcm: use new array-copying-wrapper

ALSA: pcm: use new array-copying-wrapper

This is found by our static analysis tool.

pcm_native.c utilizes memdup_user() to copy an array from userspace.

There is a new wrapper, specifically designed for copying arrays. Use
this one instead.

This is similar to the
commit 3e91a38de1dc ("fbdev: viafb: use new array-copying-wrapper").

Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com>
Link: https://patch.msgid.link/20250127160655.3119470-1-cy1yang@outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>