feat(longan): add uart7 & 5000mA bat

huangcm

2025-07-03 5fc6eec0444a62f7a596240b200dd837059dba70

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key 106   SYSTEM_NAVIGATION_LEFT
key 108   SYSTEM_NAVIGATION_DOWN
key 103   SYSTEM_NAVIGATION_UP
key 105   SYSTEM_NAVIGATION_RIGHT