pinctrl: mediatek: fix coding style

pinctrl: mediatek: fix coding style

[ Upstream commit 25a74c0f4bf1338af29a32383fb4e1a960ec5063 ]

Fix Camel spelling coding style to avoid checkpatch
warning in a following patch.

Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20210924080632.28410-4-zhiyong.tao@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Stable-dep-of: a298c70a10c6 ("pinctrl: mediatek: Initialize variable pullen and pullup to zero")
Signed-off-by: Sasha Levin <sashal@kernel.org>