doc: canaan: Add K230 CanMV board
Add description of compiling u-boot for K230 CanMV.
Since the vendor's u-boot-spl verifies u-boot header [1], it is
necessary to use the Python script from vendor to add the header to the
u-boot image.
[1] https://github.com/kendryte/k230_sdk/blob/v1.8/src/little/uboot/board/canaan/common/k230_board_common.h#L52
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/doc/board/canaan/index.rst b/doc/board/canaan/index.rst
new file mode 100644
index 0000000..e2892d2
--- /dev/null
+++ b/doc/board/canaan/index.rst
@@ -0,0 +1,8 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Canaan
+======
+.. toctree::
+ :maxdepth: 1
+
+ k230_canmv