watchdog: ziirave_wdt: Update checked I2C functionality mask

Update checked I2C functionality mask to reflect all of the SMBus
primitives used by this driver.

Signed-off-by: Andrey Smirnov <[e-mail]>
Cc: Chris Healy <[e-mail]>
Cc: Guenter Roeck <[e-mail]>
Cc: Rick Ramstetter <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Reviewed-by: Guenter Roeck <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Guenter Roeck <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>

drivers/watchdog/ziirave_wdt.c

···
 	struct ziirave_wdt_data *w_priv;
 	int val;
 
-	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+	if (!i2c_check_functionality(client->adapter,
+				     I2C_FUNC_SMBUS_BYTE |
+				     I2C_FUNC_SMBUS_BYTE_DATA |
+				     I2C_FUNC_SMBUS_WRITE_BLOCK_DATA))
 		return -ENODEV;
 
 	w_priv = devm_kzalloc(&client->dev, sizeof(*w_priv), GFP_KERNEL);