When converting a normal link to a DPCM link we need
to set dpcm_playback / dpcm_capture otherwise playback/capture
streams will not be created resulting in errors like this:
[   36.039111]  sai1-wm8960-hifi: ASoC: no backend playback stream
Fixes: a655de808cbde ("ASoC: core: Allow topology to override machine driver FE DAI link config")
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20191204151333.26625-1-daniel.baluta@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
 
 
                        /* convert non BE into BE */
                        dai_link->no_pcm = 1;
+                       dai_link->dpcm_playback = 1;
+                       dai_link->dpcm_capture = 1;
 
                        /* override any BE fixups */
                        dai_link->be_hw_params_fixup =