ASoC: wm_adsp: Use GFP_DMA for algorithm readback

Normally kmalloc() returns things that are DMA safe so not visible on all
platforms but we do need to explicitly request DMA safe memory.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm_adsp.c

@@ -553,7 +553,7 @@ static int wm_adsp_setup_algs(struct wm_adsp *dsp)
 		adsp_warn(dsp, "Algorithm list end %x 0x%x != 0xbeadead\n",
 			  term, be32_to_cpu(val));
 
-	alg = kzalloc((term - pos) * 2, GFP_KERNEL);
+	alg = kzalloc((term - pos) * 2, GFP_KERNEL | GFP_DMA);
 	if (!alg)
 		return -ENOMEM;