[Build] Enable I2C Multiplexer in most ESP8266 4M builds #4413
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The I2C Multiplexer was not included in builds that have the flag
LIMIT_BUILD_SIZE
enabled, but these builds contain a lot of I2C devices, validating the availability of the I2C Multiplexer.This concerns these builds:
Collection
buildsEnergy
buildDisplay
buildNot enabled for the ESP8266
Neopixel
builds, as there it is much less likely to be needed.For all ESP32 builds the I2C Multiplexer was already available by default.