gpio: hisi: Fix format specifier

maillist inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8A2SU
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f3b436eea7d7242ca5c528fca1d2d15bc242190



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The hisi_gpio->line is unsigned int so the format specifier
should have been %u not %d.

Signed-off-by: Devyn Liu <liudingyuan@huawei.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: shiyongbang <shiyongbang@huawei.com>