bnx2x: Add FW 7.13.21.0

bnx2x: Add FW 7.13.21.0

This patch removes the older firmware version (7.13.20.0) files
pushed earlier as kernel driver patches which were supposed to
utilize that firmware were not approved by the community because
of the driver or firmware not being backward compatible with older
firmware version, so there is no any real consumer of firmware
v7.13.20.0 files.

New firmware v7.13.21.0 along with below fixes/enhancements (which
were also part of 7.13.20.0) maintains backward compatibility as well,
so that driver can be worked with both the new firmware and an older
firmware.

- Support direct invalidation of FP HSI Ver per function ID, required for
  invalidating FP HSI Ver prior to each VF start, as there is no VF start
- BRB parity error detection support for the driver
- Fix the FCOE underrun flow
- Fix PSOD during FCoE BFS over the NIC ports after preboot driver

Link: https://www.spinics.net/lists/stable/msg508497.html
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>