Add missed flushing of data which can happen when "xhci_configure_mask()"
is called from "xhci_configure_reset_endpoint()". Ensure the 3-strikes
error feature is always enabled except for ISOCHRONOUS transfers.

MFC after:	1 week
Suggested by:	marius@


git-svn-id: svn+ssh://svn.freebsd.org/base/head@276404 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f