net/bnx2x: fix ramrod timeout

net/bnx2x: fix ramrod timeout

There is a race condition while processing RAMROD
completion in fast path queue through interrupt handler
and polling method.

Interrupt handler invoked from actual interrupt event
and from RAMROD processing polling flow may create a
situation where one flow will read and clear a fastpath
interrupt without actually processing the RAMROD completion.
Thus, causing a RAMROD timeout even though HW sent an
completion event.

Fix this by introducing an atomic variable which will be
set only when interrupt handler needs to process RAMROD
completion.

Fixes: 540a211084a7 ("bnx2x: driver core")
Cc: stable@dpdk.org
Signed-off-by: Shahed Shaikh <shshaikh@marvell.com>