Use managed clock handling, differentiate between no clock (possibly OK)
and clock init failure (never OK) and correctly handle clock detection
being deferred.
Suggested-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NGilad Ben-Yossef <gilad@benyossef.com>
Reviewed-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>