bnx2x: update fw to 7.8.2

This new firmware fixes several minor bugs:
 1. In switch dependent mode, DCB priority was used to override inner vlan
    priority.
 2. In switch dependent  mode, inner vlan was added in case of DCB priority
    even if outer vlan was present.
 3. In switch dependent mode, outer vlan was overridden by DCB priority when
    working in STATIC COS mode while inner vlan was present.
 4. iSCSI - under heavy iSCSI traffic, when TCP out-of-order condition
    occurred, it was possible for the connection to close and recover.
 5. iSCSI - connections on-chip TCP establishment might have failed.
 6. iSCSI - out-of-order isles might have caused on-chip TCP connections
    to fail in their graceful termination.
 7. iSCSI - there was a theoretical race in which an RST packet sent from
    pure-ack queue in specific timing could cause a credit-return overflow.
 8. iSCSI - not all packets were completed on a forward channel.
 9. DCB - fixed for 4-port devices; Until now, wrong credit counters ...

WHENCE

@@ -1090,6 +1090,9 @@ File: bnx2x/bnx2x-e1h-7.2.16.0.fw
 File: bnx2x/bnx2x-e2-7.2.51.0.fw
 File: bnx2x/bnx2x-e1-7.2.51.0.fw
 File: bnx2x/bnx2x-e1h-7.2.51.0.fw
+File: bnx2x/bnx2x-e1-7.8.2.0.fw
+File: bnx2x/bnx2x-e1h-7.8.2.0.fw
+File: bnx2x/bnx2x-e2-7.8.2.0.fw
 
 License:
   Copyright (c) 2007-2011 Broadcom Corporation