bnx2x: improve memory handling, low memory recovery flows

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/bnx2x/bnx2x.h
Simple merge

diff --cc drivers/net/bnx2x/bnx2x_cmn.c
Simple merge

diff --cc drivers/net/bnx2x/bnx2x_cmn.h
Simple merge

diff --cc drivers/net/bnx2x/bnx2x_ethtool.c
Simple merge

diff --cc drivers/net/bnx2x/bnx2x_main.c
Simple merge