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

This patch removes typedef for _E_NWPKT_ETHFRAME_TYPE,
and changes the name of the enum to bcm_eth_frame_type.
In addition, any calls to enum "E_NWPKT_ETHFRAME_TYPE,
are changed to call directly.

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