staging: vt6656: replace al2230_power_table array with formula.

The power table can replaced with calculation 0x0404090 | (power << 12)
removing array and length macro.

variable power never goes beyond the maximum setting.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/e277409a-4509-d09c-515d-59b952f8310d@gmail.com


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