Fix path when using LVGL v8

Author: C47D

lvgl_helpers.c

@@ -19,9 +19,17 @@
 #include "driver/i2c.h"
 
 #ifdef LV_LVGL_H_INCLUDE_SIMPLE
-#include "src/lv_core/lv_refr.h"
+#if (LVGL_VERSION_MAJOR < 8)
+    #include "src/lv_core/lv_refr.h"
+#else
+    #include "src/core/lv_refr.h"
+#endif
 #else
-#include "lvgl/src/lv_core/lv_refr.h"
+#if (LVGL_VERSION_MAJOR < 8)
+    #include "lvgl/src/lv_core/lv_refr.h"
+#else
+    #include "lvgl/src/core/lv_refr.h"
+#endif
 #endif
 
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