docs: add missing new drivers added since last release

Signed-off-by: deadprogram <[email protected]>

Author: deadprogram

README.md

@@ -52,7 +52,7 @@ func main() {
 
 ## Currently supported devices
 
-The following 53 devices are supported.
+The following 55 devices are supported.
 
 | Device Name | Interface Type |
 |----------|-------------|
@@ -68,6 +68,7 @@ The following 53 devices are supported.
 | [BMI160 accelerometer/gyroscope](https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmi160-ds000.pdf) | SPI |
 | [BMP180 barometer](https://cdn-shop.adafruit.com/datasheets/BST-BMP180-DS000-09.pdf) | I2C |
 | [BMP280 temperature/barometer](https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp280-ds001.pdf) | I2C |
+| [BMP388 pressure sensor](https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp388-ds001.pdf) | I2C |
 | [Buzzer](https://en.wikipedia.org/wiki/Buzzer#Piezoelectric) | GPIO |
 | [DS1307 real time clock](https://datasheets.maximintegrated.com/en/ds/DS1307.pdf) | I2C |
 | [DS3231 real time clock](https://datasheets.maximintegrated.com/en/ds/DS3231.pdf) | I2C |
@@ -84,6 +85,7 @@ The following 53 devices are supported.
 | [LIS3DH accelerometer](https://www.st.com/resource/en/datasheet/lis3dh.pdf) | I2C |
 | [LSM6DS3 accelerometer](https://www.st.com/resource/en/datasheet/lsm6ds3.pdf) | I2C |
 | [MAG3110 magnetometer](https://www.nxp.com/docs/en/data-sheet/MAG3110.pdf) | I2C |
+| [MCP23017 port expander](https://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf) | I2C |
 | [MCP3008 analog to digital converter (ADC)](http://ww1.microchip.com/downloads/en/DeviceDoc/21295d.pdf) | SPI |
 | [Microphone - PDM](https://cdn-learn.adafruit.com/assets/assets/000/049/977/original/MP34DT01-M.pdf) | I2S/PDM |
 | [MMA8653 accelerometer](https://www.nxp.com/docs/en/data-sheet/MMA8653FC.pdf) | I2C |