clk: renesas: rcar-gen4: Restore PLL enum sort order

When CLK_TYPE_GEN4_PLL4 was added to the rcar_gen4_clk_types enum, it
was inserted at a random location.  Restore sort order of the clock
types referring to PLLs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/dbd61ed19f79e9ae751fbb533d6c946e810e4359.1669740824.git.geert+renesas@glider.be