Add Khadas VIM3 board detection.

[BytEvil]

[root@Khadas-VIM3 ~]# python3 detect.py

Chip id:  A311D
Board id:  KHADAS_VIM3

Is this a DragonBoard 410c? False
Is this a Pi 3B+? False
Is this a Pi 4B? False
Is this a 40-pin Raspberry Pi? False
Is this a Raspberry Pi Compute Module? False
Is this a BeagleBone Board? False
Is this a Giant Board? False
Is this a Coral Dev Board? False
Is this a Coral Dev Board Mini? False
Is this a MaaXBoard? False
Is this a MaaXBoard Mini? False
Is this a SiFive Unleashed?  False
Is this a PYNQ Board? False
Is this a Rock Pi board? False
Is this a NanoPi board? False
Is this a Khadas VIM3 board? True
Is this a Clockwork Pi board? False
Is this an embedded Linux system? False
Is this a generic Linux PC? False
Is this a UDOO Bolt? False
Is this an ASUS Tinker Board? False
Is this an STM32MP1 Board? False
Is this an OS environment variable special case? False
Khadas VIM3 detected.

[makermelissa]

It looks like you're using _KHADAS_40_PIN_IDS in the khadas_vim3_40_pin property, but have _KHADAS_VIM3_IDS in the board constants.

[makermelissa]

Looks good. Thanks.