Add support for basic read, write and read capacity disk operations to
the USB mass storage test utility file.

Sponsored by:	DARPA, AFRL
Fix off-by-one error that makes 0-th pins of each bank unreachable.

Submitted by:	Maxim Ignatenko <gelraen.ua@gmail.com>
Reset HSIC hub during EHCI initialization. This makes devices connected
to external USB ports available to the system.

Submitted by:	Maxim Ignatenko <gelraen.ua@gmail.com>