pinctrl: renesas: Kconfig: Select PINCTRL_RZG2L if RZ/V2L SoC is enabled

RZ/V2L uses the RZ/G2L GPIO and pinctrl driver.
Enable the RZ/G2L pinctrl driver if RZ/V2L is enabled.
Update the description for RZ/V2L pin control support.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220110134659.30424-8-prabhakar.mahadev-lad.rj@bp.renesas.com
Link: https://lore.kernel.org/r/20220206194614.13209-1-biju.das.jz@bp.renesas.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>