watchdog: it87_wdt: Add IT8659 ID

This patch adds watchdog support for the ITE IT8659 watchdog.
IT8659 watchdog works in the same way as the other watchdogs supported
by it87_wdt.

Before this patch, IT8659 watchdog is not supported. After a modprobe,
dmesg reports:
  it87_wdt: Unknown Chip found, Chip 8659 Revision 0007

With this patch, modprobe it87_wdt recognizes the watchdog as the dmesg
output shows:
  it87_wdt: Chip IT8659 revision 7 initialized. timeout=60 sec (nowayout=0
  testmode=0)

Watchdog tests on a YANLING YL-ALP3L2C-1235U system have been successful,
the watchdog works as expected with this patch.

Signed-off-by: Werner Fischer <devlists@wefi.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20231213094525.11849-3-devlists@wefi.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Author: tk-wfischer

drivers/watchdog/it87_wdt.c

@@ -13,9 +13,9 @@
  *		    http://www.ite.com.tw/
  *
  *	Support of the watchdog timers, which are available on
- *	IT8607, IT8613, IT8620, IT8622, IT8625, IT8628, IT8655, IT8665,
- *	IT8686, IT8702, IT8712, IT8716, IT8718, IT8720, IT8721, IT8726,
- *	IT8728, IT8772, IT8783 and IT8784.
+ *	IT8607, IT8613, IT8620, IT8622, IT8625, IT8628, IT8655, IT8659,
+ *	IT8665, IT8686, IT8702, IT8712, IT8716, IT8718, IT8720, IT8721,
+ *	IT8726,	IT8728, IT8772, IT8783, IT8784 and IT8786.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -56,6 +56,7 @@
 #define IT8625_ID	0x8625
 #define IT8628_ID	0x8628
 #define IT8655_ID	0x8655
+#define IT8659_ID	0x8659
 #define IT8665_ID	0x8665
 #define IT8686_ID	0x8686
 #define IT8702_ID	0x8702
@@ -281,6 +282,7 @@ static int __init it87_wdt_init(void)
 	case IT8625_ID:
 	case IT8628_ID:
 	case IT8655_ID:
+	case IT8659_ID:
 	case IT8665_ID:
 	case IT8686_ID:
 	case IT8716_ID: