pinctrl: starfive: jh7110: Correct the level trigger configuration of iev register

[ Upstream commit 639766ca10d1e218e257ae7eabe76814bae6ab89 ]

A mistake was made in level trigger register configuration. Correct it.

Fixes: 447976ab

 ("pinctrl: starfive: Add StarFive JH7110 sys controller driver")
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/20240812070108.100923-1-hal.feng@starfivetech.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>