Kernel 4.1: ftgmac: Increase maximum NC-SI response payload size

[xzhang-brcm]

Summary: Increase max NC-SI response payload to 1480 in kernel for big response packets that are used in Broadcom OEM GetDebugData.

Test plan:

• fby2 and fbgp2 image build (pass)
• Update and boot the image on YosemiteV2 and V2.5 (pass)
• BMC initializes NC-SI interface with NIC (pass)
• Use ncsi-util send various commands such as 0x18, 0x19 and 0x1a (pass)
• Use ncsi-util to perform PLDM firmware update (pass)
• Use ncsi-uitl Broadcom OEM GetDebugData command to retrieve core dump and crash dump from NIC (pass)

root@dhcp-10-67-92-132:~# ncsi-util -m brcm -d coredump -o /tmp/nic.core Debug data length: 14216032 Received: 14216032/14216032 (100%) GetDebugData completed

root@dhcp-10-67-92-132:~# ncsi-util -m brcm -d crashdump -o /tmp/nic.crash Debug data length: 47824 Received: 47824/47824 (100%) GetDebugData completed

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[benwei13]

Hi @xzhang-brcm , thanks a lot for this update! I will work with internal team to add this to next release.