[Keymap] add sixkeyboard:via (qmk#10172)

* Adding VIA support for sixkeyboard

* Update keyboards/sixkeyboard/keymaps/via/keymap.c

* Update keyboards/sixkeyboard/keymaps/via/keymap.c

* Update keyboards/sixkeyboard/keymaps/via/keymap.c

* Update keyboards/sixkeyboard/keymaps/via/keymap.c

* Update keymap.c

added suggested header. left my name out and changed year to 2020.

keyboards/sixkeyboard/keymaps/via/keymap.c

@@ -0,0 +1,39 @@
+/* Copyright 2020
+ *
+ * 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(
+    KC_A, KC_B, KC_C,
+    KC_D, KC_E, KC_F
+  ),
+
+  [1] = LAYOUT(
+    KC_TRNS, KC_TRNS, KC_TRNS,
+    KC_TRNS, KC_TRNS, KC_TRNS
+  ),
+
+  [2] = LAYOUT(
+    KC_TRNS, KC_TRNS, KC_TRNS,
+    KC_TRNS, KC_TRNS, KC_TRNS
+  ),
+
+  [3] = LAYOUT(
+    KC_TRNS, KC_TRNS, KC_TRNS,
+    KC_TRNS, KC_TRNS, KC_TRNS
+  )
+};

keyboards/sixkeyboard/keymaps/via/rules.mk

@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+LTO_ENABLE = yes