drm/i915/adl_p: Add cdclk support for ADL-P
ADL-P has 3 possible refclk frequencies: 19.2MHz, 24MHz and 38.4MHz While we're at it, remove the drm_WARNs. They've never actually helped us catch any problems, but it's very easy to forget to update them properly for new platforms. BSpec: 55409, 49208 Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Clinton Taylor <clinton.a.taylor@intel.com> Cc: José Roberto de Souza <jose.souza@intel.com> Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com> Signed-off-by: Clinton Taylor <Clinton.A.Taylor@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Mika Kahola <mika.kahola@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210514153711.2359617-9-matthew.d.roper@intel.com
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