This fix the recent removal of clock drivers selection.
While it is not necessary to select the clock drivers themselves, we need
to select a proper implementation of the clock API, which for the meson, is
CCF

Fixes: ba66a255 ("arm64: meson: ship only the necessary clock controllers")
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NJerome Brunet <jbrunet@baylibre.com>
Reviewed-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20210429083823.59546-1-jbrunet@baylibre.com