Add motherboard BIGTREE_SKR_V1.4_TURBO (#16374)

Marlin/src/pins/lpc1768/pins_BTT_SKR.h

@@ -21,7 +21,11 @@
  */
 #pragma once
 
-#ifndef MCU_LPC1768
+#ifdef SKR_HAS_LPC1769
+  #ifndef MCU_LPC1769
+    #error "Oops! Make sure you have the LPC1769 environment selected in your IDE."
+  #endif
+#elif !defined(MCU_LPC1768)
   #error "Oops! Make sure you have the LPC1768 environment selected in your IDE."
 #endif
 

Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h

@@ -21,7 +21,9 @@
  */
 #pragma once
 
-#define BOARD_INFO_NAME "BIGTREE SKR 1.4"
+#ifndef BOARD_INFO_NAME
+  #define BOARD_INFO_NAME "BIGTREE SKR 1.4"
+#endif
 
 //
 // SD Connection