Add support for specifying BOARD in info.json (#11492)

* add support for specifying BOARD in info.json

* move BOARD from rules.mk to info.json for clueboard

* fix keyboards that do not require board

* remove out of compliance values

keyboards/clueboard/60/info.json

@@ -6,6 +6,7 @@
   "width": 15,
   "debounce": 6,
   "processor": "STM32F303",
+  "board": "QMK_PROTON_C",
   "diode_direction": "COL2ROW",
   "features": {
     "audio": true,

keyboards/clueboard/60/rules.mk

@@ -1,4 +1,2 @@
-BOARD = QMK_PROTON_C
-
 # project specific files
 SRC =	led.c

keyboards/clueboard/66/rev4/info.json

@@ -6,6 +6,7 @@
   "width": 16.5,
   "debounce": 5,
   "processor": "STM32F303",
+  "board": "QMK_PROTON_C",
   "diode_direction": "COL2ROW",
   "features": {
     "audio": true,

keyboards/clueboard/66/rev4/rules.mk

@@ -1,2 +1 @@
-BOARD = QMK_PROTON_C
 # This file intentionally left blank

keyboards/clueboard/66_hotswap/gen1/info.json

@@ -6,6 +6,7 @@
   "width": 16.5,
   "debounce": 5,
   "processor": "STM32F303",
+  "board": "QMK_PROTON_C",
   "diode_direction": "COL2ROW",
   "features": {
     "audio": true,

keyboards/clueboard/66_hotswap/gen1/rules.mk

@@ -1,4 +1,3 @@
-BOARD = QMK_PROTON_C
 LED_MATRIX_DRIVER = IS31FL3731
 
 # project specific files

keyboards/clueboard/california/info.json

@@ -3,6 +3,7 @@
     "url": "",
     "maintainer": "skullydazed",
     "processor": "STM32F303",
+    "board": "QMK_PROTON_C",
     "matrix_pins": {
         "direct": [
             ["A10", "A9"],

keyboards/clueboard/california/rules.mk

@@ -1,2 +1 @@
-BOARD = QMK_PROTON_C
 # This file intentionally left blank