Further to the thread titled: "[PATCH] SG_SCSI_RESET ioctl should
only perform requested operation" by Jeremy Linton a patch
is presented that adds "no_escalate" versions to the existing
ioctl. This should not break any existing code.

This patches applies to lk 3.7.7 and lk 3.8.0-rc7 . I will extend
sg_reset in the sg3_utils package to use it.

ChangeLog:
   - modify SG_SCSI_RESET ioctl so the SG_SCSI_RESET_NO_ESCALATE
     value may be added to the existing values. If so the existing
     device->target->bus->host escalation does not occur.
   - modify scsi_reset_provider() in the scsi_error.c file in a
     similar way to support this new functionality.

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>