Move backlight config to data driven (#19910)

keyboards/mechlovin/mechlovin9/rev1/config.h

@@ -30,7 +30,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { A4, A5, A3, A2, A1 }
 #define MATRIX_COL_PINS { B11, B10, B2, B1, B0, A7, A6, A0, C15, B4, B5, B3, C13, C14, A13 }
 
-#define BACKLIGHT_PIN B8
-#define BACKLIGHT_BREATHING
 #define BACKLIGHT_PWM_DRIVER PWMD3
-#define BACKLIGHT_PWM_CHANNEL 3
+#define BACKLIGHT_PWM_CHANNEL 3

keyboards/mechlovin/mechlovin9/rev1/info.json

@@ -4,6 +4,10 @@
         "pid": "0x6509",
         "device_version": "0.0.1"
     },
+    "backlight": {
+        "pin": "B8",
+        "breathing": true
+    },
     "indicators": {
         "caps_lock": "B9"
     },