pinctrl: ralink: rename driver names to subdrivers

MT7620, MT7621, RT2880, RT305X and RT3883 pinctrl are subdrivers of the
Ralink pinctrl driver. Change the bool for these subdrivers accordingly.

Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20220414173916.5552-7-arinc.unal@arinc9.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>