Staging: bcm: Change the name of typedef USER_BCM_DBG_STATE to bcm_user_debug_state.

This patch removes typedef for USER_BCM_DBG_STATE, and
changes the name of the struct to bcm_user_debug_state.
In addition, any calls to struct "USER_BCM_DBG_STATE"
are changed to call directly.

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