Builtin display invalid after fake deep sleep

[Neradoc]

There are a few boards that support deep sleep and have a display, but the display becomes unusable after fake deep sleep, because the display is not released prior to being re-inited on wake. The FunHouse does release displays in board_deinit() and doesn't have the issue.

Should that be added to all relevant board.c ? Or should a call to release displays be added to the fake sleep code in main.c ? After board_deinit() for example. Some boards with an e-ink display have their own thing where they wait for the display to finish refreshing before releasing.

Example boards that need the fix that I could test:

• adafruit_feather_esp32s2_tft
• hiibot_iots2
• lilygo_ttgo_t8_s2_st7789
• adafruit_macropad_rp2040

[jepler]

In #6543 we release displays for all boards. Please re-test.

[Neradoc]

Yup, the issue is fixed with the boards I tested.