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It is always better to acquire all the clock resources first and
then do the clock operations.

This patch acquires all the optional clocks first and then calls
corresponding prepare_enable().

There is no functional change.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230121145853.4792-8-biju.das.jz@bp.renesas.com

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>