tg3: Add code to verify RODATA checksum of VPD

This patch adds code to verify the checksum stored in the "RV" info
keyword of the RODATA VPD section.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 559d028..ff5bccb 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1479,6 +1479,7 @@
 #define PCI_VPD_RO_KEYWORD_PARTNO	"PN"
 #define PCI_VPD_RO_KEYWORD_MFR_ID	"MN"
 #define PCI_VPD_RO_KEYWORD_VENDOR0	"V0"
+#define PCI_VPD_RO_KEYWORD_CHKSUM	"RV"
 
 /**
  * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length