Staging: bcm: Bcmchar.c: Renamed variable "pTarang" -> "tarang"

Renamed variable "pTarang" -> "tarang" in

    bcm_char_open()
    bcm_char_release()
    bcm_char_read()

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