ehci/penwell: Do EHCI hardware workaround.

ehci/penwell: Do EHCI hardware workaround.

BZ: 18046

Sometimes, the mouse and keyboard will auto disconnect during using. And
after disconnect 60 seconds, host auto re-enum the device.

Rootcause:
On Intel Medfield platform, EHCI hardware update FRINDEX register before
update completed QH's ACTIVE flag. This behavior caused EHCI driver
can't find the completed QH in some cases. So EHCI would not send the
QH which is already completed. It need to SW to re-submit QH. But EHCI
driver lost it, then class driver would not resubmit URB forever.

Change-Id: Ic492e162b001d3cdaf1d098f9366c625e0ad10de
Signed-off-by: Yu Wang <yu.y.wang@intel.com>
Reviewed-on: http://android.intel.com:8080/32125
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Reviewed-by: Wu, Hao <hao.wu@intel.com>
Reviewed-by: Meng, Zhe <zhe.meng@intel.com>
Tested-by: Meng, Zhe <zhe.meng@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>