ASoC: ti: davinci-evm: Do not fail if the dai_set_sysclk returns -ENOTSUPP

The davinci McBSP (davinci-i2s) driver does not implement the set_sysclk
callback, which is fine and should not be treated as error.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20190830103841.25128-5-peter.ujfalusi@ti.com


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