Use a sector of the LPC flash memory to emulate EEPROM storage, removing the need to have an SD card to store system parameters.

Followup persistent store with heading, const

[2.0.x] Change direct eeprom access to HAL::PersistentStore

- Clean up the API to use a `static` class instance to adhere to Marlin convention
- Add `const` position data access for read/write
- Add Storage capacity to the interface

Make M2719 initialize the Max7219 registers and then run the initialization pattern (if one is specified).

agData in Table 71 is extremely oversampled (see Issue #11220). I have removed the data points that perform *worse* than linearly interpolating the remaining points, and fixed up two points that were simply rounded incorrectly.

Co-Authored-By: Aaron Griffith <aargri@gmail.com>

…when used with an I2C screen.

Co-Authored-By: soimy <soimy@163.com>

[2.0.x] Add Smoothieboard pins file

Counterpart to #11467

Co-Authored-By: lsellens <lsellens@users.noreply.github.com>

Address #11463

- When LCD_SET_PROGRESS_MANUALLY was disabled and an SD print was not active (i.e. the printer was idle), progress_bar_percent would read uninitialized memory from stack and cause progress bar to jump wildly.
- Also updated conditions in `#ifdef` to match `ultralcd.cpp`

* Revert "[2.0.x] bltouch home refinements (#11397)"

This reverts commit 74900f7a.

* Revert "[2.0.x]Idex and bl touch fixes (#11395)"

This reverts commit 6dafb90c.