pinctrl: nomadik: Use kmemdup_array instead of kmemdup for multiple allocation

Let the kememdup_array() take care about multiplication and possible
overflows.

Signed-off-by: Yu Jiaoliang <yujiaoliang@vivo.com>
Link: https://lore.kernel.org/20240826074037.2313468-1-yujiaoliang@vivo.com


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