Fix GPIO pins

[gustavo8000br]

Describe the bug

GPIO file
MT7621 Datasheet

ImmortalWrt version

any

ImmortalWrt target/subtarget

ZTE-E8820S

Device

ZTE-E8820S

Image kind

Self-built image

Steps to reproduce

No response

Actual behaviour

No response

Expected behaviour

No response

Additional info

No response

Diffconfig

No response

Terms

• I am reporting an issue for ImmortalWrt, not an unsupported fork.