EHCI: HSIC: Add enhancements to debug logging

This change addresses following enhancements to debug
logging:-

1) Current urb submission event logging does not cover
root hub submissions, hence move urb submission logging
to hcd driver.

2) Current urb submission event logging does not return
the correct status if submission fails. Hence log the
return status of urb submission.

Change-Id: Ic7e555e1545ec7d7b0e4042cd35235e0af26fb01
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Chandana Kishori Chiluveru <cchiluve@codeaurora.org>