media: dvb-usb: opera1: use an enum for the device number

The device number is currently a value that needs to be the same
on two separate tables, but the code doesn't actually enforce it,
leading to errors as boards get added or removed.

Fix it by using an enum.

Link: https://lore.kernel.org/linux-media/08861d80b6706ac1ed04a68959ebb78f27cb028d.1648499509.git.mchehab@kernel.orgSigned-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/usb/dvb-usb/opera1.c

@@ -425,10 +425,15 @@ static int opera1_rc_query(struct dvb_usb_device *dev, u32 * event, int *state)
 	return 0;
 }
 
+enum {
+	CYPRESS_OPERA1_COLD,
+	OPERA1_WARM,
+};
+
 static struct usb_device_id opera1_table[] = {
-	{USB_DEVICE(USB_VID_CYPRESS, USB_PID_OPERA1_COLD)},
-	{USB_DEVICE(USB_VID_OPERA1, USB_PID_OPERA1_WARM)},
-	{}
+	DVB_USB_DEV(CYPRESS, CYPRESS_OPERA1_COLD),
+	DVB_USB_DEV(OPERA1, OPERA1_WARM),
+	{ }
 };
 
 MODULE_DEVICE_TABLE(usb, opera1_table);
@@ -540,8 +545,8 @@ static struct dvb_usb_device_properties opera1_properties = {
 	.num_device_descs = 1,
 	.devices = {
 		{"Opera1 DVB-S USB2.0",
-			{&opera1_table[0], NULL},
-			{&opera1_table[1], NULL},
+			{&opera1_table[CYPRESS_OPERA1_COLD], NULL},
+			{&opera1_table[OPERA1_WARM], NULL},
 		},
 	}
 };

include/media/dvb-usb-ids.h

@@ -168,6 +168,7 @@
 #define USB_PID_CYPRESS_DW2102				0x2102
 #define USB_PID_CYPRESS_DW2104				0x2104
 #define USB_PID_CYPRESS_DW3101				0x3101
+#define USB_PID_CYPRESS_OPERA1_COLD			0x2830
 #define USB_PID_DELOCK_USB2_DVBT			0xb803
 #define USB_PID_DIBCOM_ANCHOR_2135_COLD 		0x2131
 #define USB_PID_DIBCOM_HOOK_DEFAULT			0x0064
@@ -307,7 +308,6 @@
 #define USB_PID_NOXON_DAB_STICK 			0x00b3
 #define USB_PID_NOXON_DAB_STICK_REV2			0x00e0
 #define USB_PID_NOXON_DAB_STICK_REV3			0x00b4
-#define USB_PID_OPERA1_COLD				0x2830
 #define USB_PID_OPERA1_WARM				0x3829
 #define USB_PID_PCTV_2002E				0x025c
 #define USB_PID_PCTV_2002E_SE				0x025d