Add support for DS1822P sensor, resolve #1.

[amotl]

DS1822P sensors behave just like the DS18B20 except for the following:

• it has a different family code: 0x22
• it has only the GND and DQ pins connected, it uses parasitic power from the data line.

This is coming from https://github.com/micropython/micropython/commit/59543878. Thanks, @dpgeorge.