ASoC: Add missed BCLK rate to WM5100 driver

Reported-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm5100.c

@@ -1511,6 +1511,7 @@ static int wm5100_bclk_rates_dat[WM5100_NUM_BCLK_RATES] = {
 	96000,
 	128000,
 	192000,
+	256000,
 	384000,
 	512000,
 	768000,