ALSA: ctxfi: Replace deprecated strcpy() with strscpy()

strcpy() is deprecated; use strscpy() instead. Use strscpy() to copy the
long name because there's no string to format with sprintf().

No functional changes intended.

Link: https://github.com/KSPP/linux/issues/88



Signed-off-by: Brahmajit Das <listout@listout.xyz>
Link: https://patch.msgid.link/20250606204000.8156-1-listout@listout.xyz


Signed-off-by: Takashi Iwai <tiwai@suse.de>