staging: vt6656: Use BIT() macro instead of hex value

Use the BIT() macro instead of the hexadecimal value to define the
different bits in registers.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200320171056.7841-1-oscar.carter@gmx.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>