usb: gadget: f_uac1: replace scnprintf() with sysfs_emit()

Documentation/filesystems/sysfs.rst mentions that show() should only
use sysfs_emit() or sysfs_emit_at() when formating the value to be
returned to user space. So replace scnprintf() with sysfs_emit().

Signed-off-by: Sumanth Gavini <sumanth.gavini@yahoo.com>
Link: https://lore.kernel.org/r/20250718175037.299710-1-sumanth.gavini@yahoo.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/function/f_uac1.c

@@ -1634,7 +1634,7 @@ static ssize_t f_uac1_opts_##name##_show(struct config_item *item,	\
 	int result;							\
 									\
 	mutex_lock(&opts->lock);					\
-	result = scnprintf(page, sizeof(opts->name), "%s", opts->name);	\
+	result = sysfs_emit(page, "%s", opts->name);        	        \
 	mutex_unlock(&opts->lock);					\
 									\
 	return result;							\