[Keyboard] Add support for MNK88 (#14435)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/kopibeng/mnk88/mnk88.c

@@ -0,0 +1,36 @@
+/* Copyright 2021 Samuel Lu
+ *
+ * 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 "mnk88.h"
+
+void matrix_init_kb(void) {
+    
+    setPinOutput(LED_CAPS_LOCK_PIN);
+	setPinOutput(LED_SCROLL_LOCK_PIN);
+
+	matrix_init_user();
+}
+
+bool led_update_kb(led_t led_state) {
+
+    bool res = led_update_user(led_state);
+
+    if(res) {
+        writePin(LED_CAPS_LOCK_PIN, led_state.caps_lock);
+        writePin(LED_SCROLL_LOCK_PIN, led_state.scroll_lock);
+    }
+    return res;
+}