arch: x86: enable Zhaoxin KX7000 pinctrl and GPIO support

[MingcongBai]

This driver was previously disabled due to a build failure and was addressed by a Zhaoxin patch revision. Enable this feature.

[deepin-ci-robot]

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[opsiff]

/lgtm

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在arch/x86/configs/deepin_x86_desktop_defconfig文件中，将# CONFIG_PINCTRL_KX7000 is not set注释掉的行更新为设置CONFIG_PINCTRL_KX7000=m，这可能意味着项目团队决定支持新的CONFIG_PINCTRL_KX7000配置项。

是否建议立即修改:

• 否，这个提交没有明显的语法错误或逻辑问题。
• 是，如果CONFIG_PINCTRL_KX7000的设置是项目团队经过深思熟虑的决定，那么这个更改应该立即合并到主分支中。
• 否，如果这个更改是无意的或者没有得到团队的批准，那么应该撤销这个更改。