clk: sunxi-ng: tighten SoC deps on explicit AllWinner SoCs

Tighten the depends on the various AllWinn SoCs so we don't
inadvertantly get clock drivers when we're not wanting them
like 32 bit SoC clocks for 64 bit configs. Ensure there's
still test coverage though.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>