iio:proximity:ping: White space cleanup of spacing around {} in id tables

The spacing in this driver was inconsistent so make sure we have a space
after { and before } for the two id tables.
Avoid providing examples of this inconsistency that get copied into new
drivers.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20211230174911.78291-7-jic23@kernel.org

drivers/iio/proximity/ping.c

@@ -267,8 +267,8 @@ static const struct iio_chan_spec ping_chan_spec[] = {
 };
 
 static const struct of_device_id of_ping_match[] = {
-	{ .compatible = "parallax,ping", .data = &pa_ping_cfg},
-	{ .compatible = "parallax,laserping", .data = &pa_laser_ping_cfg},
+	{ .compatible = "parallax,ping", .data = &pa_ping_cfg },
+	{ .compatible = "parallax,laserping", .data = &pa_laser_ping_cfg },
 	{},
 };