[media] rtl2830: add kernel-doc comments for platform_data

Add kernel-doc comments for platform_data configuration structure.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/dvb-frontends/rtl2830.h

@@ -20,33 +20,26 @@
 
 #include <linux/dvb/frontend.h>
 
-struct rtl2830_platform_data {
-	/*
-	 * Clock frequency.
-	 * Hz
-	 * 4000000, 16000000, 25000000, 28800000
+/**
+ * struct rtl2830_platform_data - Platform data for the rtl2830 driver
+ * @clk: Clock frequency (4000000, 16000000, 25000000, 28800000).
+ * @spec_inv: Spectrum inversion.
+ * @vtop: AGC take-over point.
+ * @krf: AGC ratio.
+ * @agc_targ_val: AGC.
+ * @get_dvb_frontend: Get DVB frontend.
+ * @get_i2c_adapter: Get I2C adapter.
+ * @pid_filter: Set PID to PID filter.
+ * @pid_filter_ctrl: Control PID filter.
  */
-	u32 clk;
 
-	/*
-	 * Spectrum inversion.
-	 */
+struct rtl2830_platform_data {
+	u32 clk;
 	bool spec_inv;
-
-	/*
-	 */
 	u8 vtop;
-
-	/*
-	 */
 	u8 krf;
-
-	/*
-	 */
 	u8 agc_targ_val;
 
-	/*
-	 */
 	struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
 	struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
 	int (*pid_filter)(struct dvb_frontend *, u8, u16, int);