Boost flash and RAM speeds on ESP boards #8870
Merged
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We inherited a bunch of DIO from 8.x which used it for ROM flash settings. Pretty much everything should be able to do QIO.
S2, S3 and ESP32 all support 80mhz as well and ESP modules tend to work at that speed too. Only on ESP32 do we leave PSRAM at 40mhz because the 80/80 mode uses an extra SPI resource that we don't want to use.
Fixes #8612
Smoke tested on Adafruit Feather S2 with 4MB flash and 2MB ram. No other boards tested. We can back out these changes if boards have trouble with them.