pinctrl: mediatek: Add EINT support for multiple addresses

For flexible routing, eint will be divided into 5 bases,
and it will obtain the operation address through the pins array.

Signed-off-by: Hao Chang <ot_chhao.chang@mediatek.com>
Signed-off-by: Qingliang Li <qingliang.li@mediatek.com>
Link: https://lore.kernel.org/20250322035307.4811-2-ot_chhao.chang@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: hvbjvb