Migrate led_update_kb implementations to DD (#23981)

keyboards/mc_76k/keyboard.json

@@ -22,6 +22,10 @@
             "resync": true
         }
     },
+    "indicators": {
+        "caps_lock": "D2",
+        "on_state": 0
+    },
     "matrix_pins": {
         "cols": ["D5", "D3", "D4", "B1", "D6", "D7", "B4", "B5", "F7", "F6", "F5", "F4", "F1", "F0"],
         "rows": ["C7", "C6", "B6", "B0", "D1", "D0"]

keyboards/mc_76k/mc_76k.c

@@ -1,34 +0,0 @@
-/* Copyright 2020 Yiancar-Designs
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "quantum.h"
-
-void keyboard_pre_init_kb (void) {
-  gpio_set_pin_output(D2);
-}
-
-bool led_update_kb(led_t led_state) {
-  bool res = led_update_user(led_state);
-  if(res) {
-    // gpio_write_pin sets the pin high for 1 and low for 0.
-    // In this example the pins are inverted, setting
-    // it low/0 turns it on, and high/1 turns the LED off.
-    // This behavior depends on whether the LED is between the pin
-    // and VCC or the pin and GND.
-    gpio_write_pin(D2, !led_state.caps_lock);
-  }
-  return res;
-}