msm: clock-8974: Add block reset support for the USB cores

The USB 3.0, USBHS and USB HSIC cores require asynchronous block
reset support for correct operation in certain scenarios. Support
these resets by adding BCR_REG for the relevant clocks.

Change-Id: If4f47201c485ea2060d4b795e767a1c69d34d22e
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>