SanityCheck Biqu SKR 1.1 => BigTree SKR 1.1 (#14526)

Marlin/src/inc/SanityCheck.h

   #error "POWER_SUPPLY is now obsolete. Please remove it from Configuration.h."
 #endif
 
-#define BOARD_MKS_13     -47
-#define BOARD_TRIGORILLA -343
-#define BOARD_RURAMPS4D  -1550
-#define BOARD_FORMBOT_TREX2 -81
+#define BOARD_MKS_13        -1109
+#define BOARD_TRIGORILLA    -1131
+#define BOARD_RURAMPS4D     -3020
+#define BOARD_FORMBOT_TREX2 -1125
+#define BOARD_BIQU_SKR_V1_1 -2014
 #if MB(MKS_13)
   #error "BOARD_MKS_13 has been renamed BOARD_MKS_GEN_13. Please update your configuration."
 #elif MB(TRIGORILLA)
   #error "BOARD_RURAMPS4D has been renamed BOARD_RURAMPS4D_11. Please update your configuration."
 #elif MB(FORMBOT_TREX2)
   #error "FORMBOT_TREX2 has been renamed BOARD_FORMBOT_TREX2PLUS. Please update your configuration."
+#elif MB(BOARD_BIQU_SKR_V1_1)
+  #error "BIQU_SKR_V1_1 has been renamed BOARD_BIGTREE_SKR_V1_1. Please update your configuration."
 #endif
 #undef BOARD_MKS_13
 #undef BOARD_TRIGORILLA
 #undef BOARD_RURAMPS4D
 #undef BOARD_FORMBOT_TREX2
+#undef BOARD_BIQU_SKR_V1_1
 
 /**
  * Marlin release, version and default string