Knobgoblin: rename ortho keymap to default (#13592)

Keyboard did not previously have a `default` keymap.

keyboards/knobgoblin/keymaps/default/keymap.c

@@ -0,0 +1,37 @@
+/* Copyright 2020 MrT1ddl3s
+ *
+ * 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 QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    [0] = LAYOUT_ortho(
+                  KC_EQL, KC_PSLS, KC_PAST, KC_PMNS,
+                  KC_P7,  KC_P8,   KC_P9,   KC_PPLS,
+                  KC_P4,  KC_P5,   KC_P6,   KC_PPLS,
+         KC_MPLY, KC_P1,  KC_P2,   KC_P3,   KC_PENT,
+         KC_MUTE, MO(1),  KC_P0,   KC_PDOT, KC_PENT
+				 ),
+
+	[1] = LAYOUT_ortho(
+                  KC_ESC,  KC_TRNS, KC_TRNS,  KC_TRNS,
+                  KC_HOME, KC_TRNS, KC_PGUP,  KC_TRNS,
+                  KC_END , KC_UP,   KC_PGDN,  KC_TRNS,
+         KC_TRNS, KC_LEFT, KC_DOWN, KC_RIGHT, KC_SPC,
+         KC_TRNS, KC_TRNS, KC_BSPC, KC_DEL,   KC_TRNS
+
+				 )
+};