Staging: bcm: Remove typedef for stGPIOMultiMode and call directly.

This patch removes typedef for
stGPIOMultiMode, and changes the name of the
struct to bcm_gpio_multi_mode. In addition,
any calls to typedefs GPIO_MULTI_MODE, or
*PGPIO_MULTI_MODE are changed to call the
struct directly.

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