Added variables to separate the fine tuned timeout values for
connection destroy and context destroy for both 1g and 10g devices.

v2: Extended the 5771X disconnect timeout from 10s to 20s as the firmware
has a retransmission timeout of 16s.  This fixes one of the iscsi_endpoint
leak issues when the target is slow or non-responsive to our TCP FIN.
Signed-off-by: NEddie Wai <eddie.wai@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Reviewed-by: NBenjamin Li <benli@broadcom.com>
Acked-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>