Move backlight config to data driven (#19910)

keyboards/uk78/config.h

@@ -25,8 +25,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* COL2ROW or ROW2COL */
 #define DIODE_DIRECTION COL2ROW
 
-#define BACKLIGHT_PIN B6
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
 

keyboards/uk78/info.json

@@ -8,6 +8,9 @@
     "pid": "0x004E",
     "device_version": "0.0.2"
   },
+  "backlight": {
+    "pin": "B6"
+  },
   "processor": "at90usb1286",
   "bootloader": "atmel-dfu",
   "layouts": {