EHCI: HSIC: Add support for suspend, resume and URB logging

This change logs suspend, resume and URB submission and
completion events for all the endpoints based on the mask
value set by module parameter. By default logging is enabled
for ep0 and efs sync interface.

Example:
To capture 2 in endpoint events
echo -n 4 > /sys/module/ehci_hcd/parameters/ep_addr_txdbg_mask
To capture 3 out endpoint events
echo -n 8 > /sys/module/ehci_hcd/parameters/ep_addr_rxdbg_mask
To print debug log events on ep0
cat /sys/kernel/debug/ehci_hsic_msm_dbg/show_ctrl_events
To print debug log events on other endpoints
cat /sys/kernel/debug/ehci_hsic_msm_dbg/show_data_events

Change-Id: I1ae78095f0323e957ee33df17e4451f13d4a09fb
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
[sboyd: Only take core/hcd.c part]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>