qlge:Fix crash caused by mailbox execution on wedged chip.

When we are in a recover process from a chip fatal error,
	driver should skip over execution of mailbox commands during
	resetting chip.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>