Fix the LFKeyboards so they work with the QMK Configurator (#4591)

* Make layer_info weak so it works with QMK Configurator

* Fix lfk87 compile issue

* Add fixes for lfkpad

keyboards/lfkeyboards/lfk87/lfk87.c

@@ -14,6 +14,15 @@ uint16_t click_hz = CLICK_HZ;
 uint16_t click_time = CLICK_MS;
 uint8_t click_toggle = CLICK_ENABLED;
 
+__attribute__((weak))
+const Layer_Info layer_info[] = {
+    // Layer     Mask           Red     Green   Blue
+    {0x00000000, 0xFFFFFFFF, {0x00, 0xFF, 0x00}}, // base layers - green
+    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
+    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
+    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
+};
+
 void matrix_init_kb(void)
 {
     // put your keyboard start-up code here