soc/intel/denverton/uart.c: Clean up code

Since there is only one device ID used for UART,
an array is not needed. Therefore, just save the
device ID to the device variable.

Change-Id: Icd325e1102a85cc175f6025519a47a1b64ee5b46
Signed-off-by: Felix Singer <felix.singer@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37121
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/soc/intel/denverton_ns/uart.c

@@ -57,15 +57,10 @@ static struct device_operations uart_ops = {
 	.enable = DEVICE_NOOP
 };
 
-static const unsigned short uart_ids[] = {
-	PCI_DEVICE_ID_INTEL_DENVERTON_HSUART,
-	0
-};
-
 static const struct pci_driver uart_driver __pci_driver = {
 	.ops = &uart_ops,
 	.vendor = PCI_VENDOR_ID_INTEL,
-	.devices = uart_ids
+	.device = PCI_DEVICE_ID_INTEL_DENVERTON_HSUART
 };
 
 static void hide_hsuarts(void)