Staging: bcm: Removes the volatile type definition from Adapter.h

This patch removes the following warning: "Use of
volatile is usually wrong: see
Documentation/volatile-considered-harmful.txt".
There were two variables defined in this manner.

Signed-off-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>