[Keyboard] Add Xiaomi MK02 (#7825)

* [Keyboard] Added xiaomi/mk02

* keyboards/xiaomi/mk02: cleanup

* keyboards/xiaomi/mk02: add linker script

* update readme

* update

* remove via (crashes during startup)

* LAYOUT => LAYOUT_tkl_ansi

* Change vid/pid

* Add a warning to the readme

keyboards/xiaomi/mk02/config.h

@@ -0,0 +1,60 @@
+/*
+Copyright 2015 Jun Wako <wakojun@gmail.com>
+
+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/>.
+*/
+
+#pragma once
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x0B91
+#define DEVICE_VER      0x0001
+/* in python2: list(u"whatever".encode('utf-16-le')) */
+/*   at most 32 characters or the ugly hack in usb_main.c borks */
+#define MANUFACTURER Xiaomi
+#define PRODUCT MK02
+#define DESCRIPTION Yuemi Pro MK02
+
+/* key matrix size */
+#define MATRIX_ROWS 6
+#define MATRIX_COLS 17
+
+#define MATRIX_ROW_PINS { A3, A4, A5, A6, A7, B0 }
+#define MATRIX_COL_PINS { B13, B14, B15, A15, B3, B4, B5, B6, B7, B8, B9, C14, C15, B11, A1, A2, B12 }
+#define DIODE_DIRECTION ROW2COL
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE    5
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION