Add support for M5Stack Core2 and CoreS3 (FT6336U)

[Fexiven]

Both devices use the FT6336U chip.

[makermelissa]

Are you completely sure it's a FT6336U? For that chip the vendor ID shouldn't be 1, it should be 0x11. The CST826 had a 1 in the register that this driver looks at for vendor and we initially thought it was the FT6336U, but it was shipped with a different chip. You can maybe try the CST8XX driver to see if that works?

[Fexiven]

Yes, i just took it apart to confirm and it's a FT6336U. The CST8XX driver doesn't work.

Heres my output from touch = Adafruit_FocalTouch(i2c, debug=True):

code.py output:
        $A1 => ['0x30', '0x8', '0x64', '0x1', '0x1', '0x1', '0x0', '0x1']
lib_ver: 3008, chip_id: 64, firm_id: 01, vend_id: 01
Library vers 3008
Firmware ID 01
        $88 => ['0x13']
Point rate 19 Hz
        $80 => ['0x1e']
Thresh 30

Code done running.

[makermelissa]

Ok, thanks. That works for me then.