tg3: Add legacy bootcode version decoding

This patch adds code to obtain the bootcode version for versions
of bootcode that do not use the new method.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 508def3..34dfaaa 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -1737,6 +1737,10 @@
 #define TG3_NVM_DIRENT_SIZE		0xc
 #define TG3_NVM_DIRTYPE_SHIFT		24
 #define TG3_NVM_DIRTYPE_ASFINI		1
+#define TG3_NVM_PTREV_BCVER		0x94
+#define TG3_NVM_BCVER_MAJMSK		0x0000ff00
+#define TG3_NVM_BCVER_MAJSFT		8
+#define TG3_NVM_BCVER_MINMSK		0x000000ff
 
 #define TG3_EEPROM_SB_F1R0_EDH_OFF	0x10
 #define TG3_EEPROM_SB_F1R2_EDH_OFF	0x14