iio: accel: kxcjk1013: make sysfs/sampling_frequency_avail dynamic

In preparation for KXTF9 support, make sampling_frequency_avail
attribute dynamic.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/accel/kxcjk-1013.c

@@ -155,6 +155,9 @@ static const struct kx_odr_map samp_freq_table[] = {
 	{ 1600, 0, 0x07, 0x06 },
 };
 
+static const char *const kxcjk1013_samp_freq_avail =
+	"0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600";
+
 /* Refer to section 4 of the specification */
 static const struct {
 	int odr_bits;
@@ -879,13 +882,19 @@ static int kxcjk1013_buffer_postdisable(struct iio_dev *indio_dev)
 	return kxcjk1013_set_power_state(data, false);
 }
 
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
-	"0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600");
+static ssize_t kxcjk1013_get_samp_freq_avail(struct device *dev,
+					     struct device_attribute *attr,
+					     char *buf)
+{
+	return sprintf(buf, "%s\n", kxcjk1013_samp_freq_avail);
+}
+
+static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(kxcjk1013_get_samp_freq_avail);
 
 static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326");
 
 static struct attribute *kxcjk1013_attributes[] = {
-	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
+	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 	&iio_const_attr_in_accel_scale_available.dev_attr.attr,
 	NULL,
 };