pinctrl: ingenic: Remove platform ID table

We enforce devicetree support in the Kconfig and all Ingenic boards
without exception probe their drivers from devicetree. The code path to
probe the driver from arch code can then be considered as dead code and
removed.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200106232711.559727-2-paul@crapouillou.net


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