pinctrl: renesas: r8a779{51,6,65}: Reduce non-functional differences

Change whitespace in the pin control drivers for R-Car H3 ES2.0+, R-Car
M3-W/M3-W+, and R-Car M3-N, to reduce the differences among these very
similar drivers.

These changes have no functional impact.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/527b45ebfc664a80e41cb0136677db7260e11437.1619785375.git.geert+renesas@glider.be