Staging: bcm: Bcmchar.c: Renamed variable "pReadData" -> "read_data"

Renamed variable "pReadData" -> "read_data" in

    bcm_handle_nvm_read_cmd()
    handle_flash2x_adapter()

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>