ASoC: tegra: Fix wrong value type in DSPK

The enum controls are expected to use enumerated value type.
Update relevant references in control get/put callbacks.

Fixes: 327ef647 ("ASoC: tegra: Add Tegra186 based DSPK driver")
Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/1637219231-406-5-git-send-email-spujar@nvidia.com


Signed-off-by: Mark Brown <broonie@kernel.org>