[SCSI] bnx2i: Fixed bugs in the handling of unsolicited NOP-Ins

Unsolicited NOP-Ins are placed in the receive queue of the hardware
which requires to be read out regardless if the receive pipe is suspended
or not.  This patch adds the disposal of this RQ element under this
condition.
Also fixed the bug in the unsolicited NOP-In handling routine which
checks for the RESERVED_ITT.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>