Rework change made at r203146. Instead of reporting all wire errors as

Rework change made at r203146. Instead of reporting all wire errors as
SCSI status errors to CAM (that was wrong, as it too often turned retriable
wire errors into non-retriable REQUEST SENSE errors), do it only for STALL
errors on control pipe of the CBI devices. STALL on control pipe is just
a one of the ways to report error for CBI devices.

PR:		usb/150401, usb/154593.
Reviewed by:	hselasky

git-svn-id: svn://svn.freebsd.org/base/stable/8@220771 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f