pinctrl: renesas: Unify config naming

pinctrl: renesas: Unify config naming

Renesas SoC has chip number / chip name. Some SoC is using chip number,
and some SoC is using chip name on current Renesas pincontrol Kconfig.
Let's unify "pin control support for ${CHIP_NUMBER} (${CHIP_NAME}).

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/87bjqdraf1.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>