No need to stop XHCI endpoints in disabled state.

Some AMD XHCI implementations apparently assert a permanent
internal failure if this happens.

Submitted by: ali.abdallah@suse.com
PR: 251503
Sponsored by: Mellanox Technologies // NVIDIA Networking

(cherry picked from commit 1622a498525b4ef0d23d30a587b9a3888c3ee0d5)