feat: add kendryte k210 community definition file

Author: Yannis Huber

data/Kendryte-Community/LICENSE

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+Copyright 2019 RISC-V team
+
+Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

data/Kendryte-Community/README.md

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+# SVD files for Kendryte chips
+
+These files have not been provided by Kendryte. Instead, they have been created
+from scratch from the available documentation.
+
+  * k210.svd: copied from the Rust Embedded project and used with permission under
+    the license. The original source is located at:
+    https://github.com/riscv-rust/k210-pac/blob/master/k210.svd