serial: 8250_mid: Enable HSU on Intel Cedar Fork PCH

Intel Cedar Fork PCH has similar HSU as has been used on Intel Denverton.
Add PCI ID to get it enumerated.

While here, remove DNV part form INTEL_MID_UART_DNV_FISR to show that is
used not only on Intel Denverton from now on.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/8250/8250_mid.c

@@ -23,10 +23,11 @@
 #define PCI_DEVICE_ID_INTEL_PNW_UART2	0x081c
 #define PCI_DEVICE_ID_INTEL_PNW_UART3	0x081d
 #define PCI_DEVICE_ID_INTEL_TNG_UART	0x1191
+#define PCI_DEVICE_ID_INTEL_CDF_UART	0x18d8
 #define PCI_DEVICE_ID_INTEL_DNV_UART	0x19d8
 
 /* Intel MID Specific registers */
-#define INTEL_MID_UART_DNV_FISR		0x08
+#define INTEL_MID_UART_FISR		0x08
 #define INTEL_MID_UART_PS		0x30
 #define INTEL_MID_UART_MUL		0x34
 #define INTEL_MID_UART_DIV		0x38
@@ -130,7 +131,7 @@ static int dnv_handle_irq(struct uart_port *p)
 {
 	struct mid8250 *mid = p->private_data;
 	struct uart_8250_port *up = up_to_u8250p(p);
-	unsigned int fisr = serial_port_in(p, INTEL_MID_UART_DNV_FISR);
+	unsigned int fisr = serial_port_in(p, INTEL_MID_UART_FISR);
 	u32 status;
 	int ret = 0;
 	int err;
@@ -377,6 +378,7 @@ static const struct pci_device_id pci_ids[] = {
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_PNW_UART2, pnw_board),
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_PNW_UART3, pnw_board),
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_TNG_UART, tng_board),
+	MID_DEVICE(PCI_DEVICE_ID_INTEL_CDF_UART, dnv_board),
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_DNV_UART, dnv_board),
 	{ },
 };

drivers/tty/serial/8250/8250_pci.c

@@ -3368,6 +3368,7 @@ static const struct pci_device_id blacklist[] = {
 	{ PCI_VDEVICE(INTEL, 0x081c), },
 	{ PCI_VDEVICE(INTEL, 0x081d), },
 	{ PCI_VDEVICE(INTEL, 0x1191), },
+	{ PCI_VDEVICE(INTEL, 0x18d8), },
 	{ PCI_VDEVICE(INTEL, 0x19d8), },
 
 	/* Intel platforms with DesignWare UART */