[PATCH] I2C: add Serverworks CSB6 support to i2c-piix4

This patch adds support for the Serverworks CSB6 to i2c-piix4 driver. It
was confirmed to work by lasirona at yahoo dot com in support ticket
#1424:
http://secure.netroedge.com/~lm78/readticket.cgi?ticket=1424

drivers/i2c/busses/Kconfig

@@ -161,11 +161,12 @@ config I2C_PIIX4
 	help
 	  If you say yes to this option, support will be included for the Intel
 	  PIIX4 family of mainboard I2C interfaces.  Specifically, the following
-	  versions of the chipset is supported:
+	  versions of the chipset are supported:
 	    Intel PIIX4
 	    Intel 440MX
 	    Serverworks OSB4
 	    Serverworks CSB5
+	    Serverworks CSB6
 	    SMSC Victory66
 
 	  This driver can also be built as a module.  If so, the module

drivers/i2c/busses/i2c-piix4.c

@@ -22,7 +22,7 @@
 /*
    Supports:
 	Intel PIIX4, 440MX
-	Serverworks OSB4, CSB5
+	Serverworks OSB4, CSB5, CSB6
 	SMSC Victory66
 
    Note: we assume there can only be one device, with one SMBus interface.
@@ -422,6 +422,13 @@ static struct pci_device_id piix4_ids[] = {
 		.subdevice =	PCI_ANY_ID,
 		.driver_data =	0,
 	},
+	{
+		.vendor =	PCI_VENDOR_ID_SERVERWORKS,
+		.device =	PCI_DEVICE_ID_SERVERWORKS_CSB6,
+		.subvendor =	PCI_ANY_ID,
+		.subdevice =	PCI_ANY_ID,
+		.driver_data =	0,
+	},
 	{
 		.vendor =	PCI_VENDOR_ID_INTEL,
 		.device =	PCI_DEVICE_ID_INTEL_82443MX_3,