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 e44cfe7c2a29ef4d962037df3530228c03dd4e55

Reported-by: raffaele <ralfconn@tele2.it>
Tested-by: Roman Mamedov <roman@rm.pp.ru>
Signed-off-by: Shane Huang <shane.huang@amd.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>