Staging: bcm: Remove typedef for _FLASH2X_SECTION_VAL and reference directly.

This patch removes typedef for _FLASH2X_SECTION_VAL,
and changes the name of the enum to bcm_flash2x_section_val.
In addition, any calls to typedefs FLASH2X_SECTION_VAL
are changed to reference the enum directly.

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