ASoC: Intel: bytcr_rt5651: Select RCCLK on init()

When the BYT_RT5651_MCLK_EN quirk is set, we disable the MCLK from
byt_rt5651_init(), we need to select the RCCLK as sysclk before doing this
to make sure that jack-detect works directly after boot.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>