hwmon: (nct6683) Add customer ID for ASRock Z590 Taichi

Add support for customer ID 0x1621 found on ASRock Z590 Taichi
boards using the Nuvoton NCT6686D embedded controller.

This allows the driver to instantiate without requiring the
force=1 module parameter.

Tested on two separate ASRock Z590 Taichi boards, both with
EC firmware version 1.0 build 01/25/21.

Signed-off-by: Anj Duvnjak <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Guenter Roeck <[e-mail]>

Documentation/hwmon/nct6683.rst

···
 ASRock X570			NCT6683D EC firmware version 1.0 build 06/28/19
 ASRock X670E			NCT6686D EC firmware version 1.0 build 05/19/22
 ASRock B650 Steel Legend WiFi	NCT6686D EC firmware version 1.0 build 11/09/23
+ASRock Z590 Taichi		NCT6686D EC firmware version 1.0 build 01/25/21
 MSI B550			NCT6687D EC firmware version 1.0 build 05/07/20
 MSI X670-P			NCT6687D EC firmware version 0.0 build 09/27/22
 MSI X870E			NCT6687D EC firmware version 0.0 build 11/13/24

drivers/hwmon/nct6683.c

···
 #define NCT6683_CUSTOMER_ID_ASROCK2	0xe1b
 #define NCT6683_CUSTOMER_ID_ASROCK3	0x1631
 #define NCT6683_CUSTOMER_ID_ASROCK4	0x163e
+#define NCT6683_CUSTOMER_ID_ASROCK5	0x1621
 
 #define NCT6683_REG_BUILD_YEAR		0x604
 #define NCT6683_REG_BUILD_MONTH		0x605
···
 	case NCT6683_CUSTOMER_ID_ASROCK3:
 		break;
 	case NCT6683_CUSTOMER_ID_ASROCK4:
+		break;
+	case NCT6683_CUSTOMER_ID_ASROCK5:
 		break;
 	default:
 		if (!force)