EHCI: HSIC: Add enhancements to debug logging

This change addresses following enhancements to debug
logging:-

1) Add data payload logging which is not currently
supported. This helps to sniff first 32 bytes of data
being sent and received. Data payload logging is
enabled by default. To disable data payload logging:-

echo 0 > /sys/module/ehci_hcd/parameters/enable_payload_log

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

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

CRs-Fixed: 393294
Change-Id: Ic7e555e1545ec7d7b0e4042cd35235e0af26fb01
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>