ANDROID: GKI: USB: Fix ABI diff for struct usb_bus

Adds new member skip_resume to struct usb_bus to resolve ABI diff.
This patch also adds the capability to skip device resume during
system resume. It allows xHC to remain in low power mode and not
resume the bus when system wide resume happens.
Instead, the controller comes out of low power mode only
when usb device issues a remote wakeup or if there is
host initiated bus resume.

Test: build
Bug: 153445212
Change-Id: I96cdcb9e3642906b4afa08d9bde07e123d9b3977
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
(cherry picked from commit 567a7ba0cc8c96d8b01ea290417c8397d1acd078)
[hridya: partial cherry-pick]
Signed-off-by: Hridya Valsaraju <hridya@google.com>