EHCI: HSIC: disable pm runtime device before remove hcd

Merge order of commits 21a480e and e50d914 introduced runtime pm
disable depth counter imbalance fixed by e50d914 again. Fix the
bug by disabling runtime pm before removing HCD.

Change-Id: I249a4f63db3a975652e6ce15545584e41bae284b
Signed-off-by: Ido Shayevitz <idos@codeaurora.org>