iio: light: cm3232: Add mod_devicetable.h include and drop of_match_ptr

Enables ACPI probing via PRP0001 and removes an example that might
be cut and paste to a new driver.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>

drivers/iio/light/cm3232.c

@@ -10,6 +10,7 @@
 
 #include <linux/i2c.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/init.h>
@@ -418,7 +419,7 @@ MODULE_DEVICE_TABLE(of, cm3232_of_match);
 static struct i2c_driver cm3232_driver = {
 	.driver = {
 		.name	= "cm3232",
-		.of_match_table = of_match_ptr(cm3232_of_match),
+		.of_match_table = cm3232_of_match,
 #ifdef CONFIG_PM_SLEEP
 		.pm	= &cm3232_pm_ops,
 #endif