Simplify LVGL init: move code into Tactility (#208)

The esp_lvgl_port code was duplicated across all boards, so I moved it into the Tactility subproject to simplify the board implementations.

TactilityHeadless/Include/Tactility/hal/Configuration.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include "./Power.h"
 #include "./SdCard.h"
 #include "./i2c/I2c.h"
 #include "Tactility/hal/spi/Spi.h"
@@ -8,15 +7,19 @@
 namespace tt::hal {
 
 typedef bool (*InitBoot)();
-typedef bool (*InitHardware)();
-typedef bool (*InitLvgl)();
 
 class Display;
 class Keyboard;
+class Power;
 typedef std::shared_ptr<Display> (*CreateDisplay)();
 typedef std::shared_ptr<Keyboard> (*CreateKeyboard)();
 typedef std::shared_ptr<Power> (*CreatePower)();
 
+enum class LvglInit {
+    Default,
+    None
+};
+
 struct Configuration {
     /**
      * Called before I2C/SPI/etc is initialized.
@@ -24,13 +27,13 @@ struct Configuration {
      */
     const InitBoot _Nullable initBoot = nullptr;
 
-    /** Create and initialize all LVGL devices. (e.g. display, touch, keyboard) */
-    const InitLvgl _Nullable initLvgl = nullptr;
+    /** Init behaviour: default (esp_lvgl_port for ESP32, nothing for PC) or None (nothing on any platform). Only used in Tactility, not in TactilityHeadless. */
+    const LvglInit lvglInit = LvglInit::Default;
 
     /** Display HAL functionality. */
     const CreateDisplay _Nullable createDisplay = nullptr;
 
-    /** Display HAL functionality. */
+    /** Keyboard HAL functionality. */
     const CreateKeyboard _Nullable createKeyboard = nullptr;
 
     /** An optional SD card interface. */