Revert "bnx2x: allow nvram test to run when device is down"

Revert "bnx2x: allow nvram test to run when device is down"

This reverts commit 166f72c0064aee70de5d3e0299e6a1458f437bd1
("bnx2x: allow nvram test to run when device is down").

Since it makes access to the device in D3 state possible.
More work is required to make sure device is not set to D3
during ifdown. Until this is done the nvram-test should simply
exit if device is down like it did before.

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>