ML56-TK Linux Driver

[ytliu6]

Platform: MA35D1
Platform resource link: https://www.nuvoton.com/products/microp ... -a35-mpus/
BSP link: https://github.com/OpenNuvoton/MPU-Family
Download link: https://www.nuvoton.com/resource-downlo ... 1308332003
Brief:
ML56-TK driver implement the functionality of touch key detection on the Linux
The I2C bus is used for communication between MA35D1 and ML56-TK
When touch event is detected by ML56-TK, it will notify MA35D1 by GPIO interrupt