USB: fix SB600 USB subsystem hang bug

USB: fix SB600 USB subsystem hang bug

This patch is required for all AMD SB600 revisions to avoid USB subsystem hang
symptom. The USB subsystem hang symptom is observed when the system has
multiple USB devices connected to it. In some cases a USB hub may be required
to observe this symptom.

Reported in bugzilla as #11599, the similar patch for SB700 old revision is:
commit b09bc6cbae4dd3a2d35722668ef2c502a7b8b093

Reported-by: raffaele <[email protected]>
Tested-by: Roman Mamedov <[email protected]>
Signed-off-by: Shane Huang <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>