Staging: bcm: Bcmchar.c: Renamed variable "sWrmBuffer" -> "wrm_buff"

Renamed variable "sWrmBuffer" -> "wrm_buff" in

    bcm_char_ioctl_reg_write_private()
    bcm_char_ioctl_eeprom_reg_read()

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