[keyboard] Add Caps Lock LED Logic to exclusive/e85/soldered (#10639)

* on behalf of VashtaNerada commiting his code to get caps lock led working on the soldered E8d E8.5

* Update keyboards/exclusive/e85/soldered/soldered.c

Co-authored-by: Joel Challis <git@zvecr.com>

Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/exclusive/e85/soldered/soldered.c

@@ -1,4 +1,4 @@
-/* Copyright 2020 MechMerlin
+/* Copyright 2020 VashtaNerada
  *
  * 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
@@ -15,3 +15,16 @@
  */
 
 #include "soldered.h"
+
+void keyboard_pre_init_kb(void) {
+  setPinOutput(C7);
+  
+  keyboard_pre_init_user();
+}
+
+bool led_update_kb(led_t led_state) {
+    if (led_update_user(led_state)) {
+        writePin(C7, led_state.caps_lock);
+    }
+    return true;
+}