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

This patch removes typedef for _PACKETTOSEND, changes the
name of the struct from _PACKETTOSEND to bcm_packettosend.
In addition, any calls to the following typedefs
"PACKETTOSEND, *PPACKETTOSEND" are changed to call
the struct directly.

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