Move the external mbedtls submodule out of the sim/mcuboot-sys directory
into the ext directory. This will allow the same copy of mbed TLS to be
used by other board support packages, instead of having to make a
duplicate clone.
Signed-off-by: David Brown <david.brown@linaro.org>
The mbedtls library is used by the binding crate, so move the submodule
into this directory as well.
Signed-off-by: David Brown <david.brown@linaro.org>
Instead of stubbing out the image validation code, compile it, and add
the SHA256 TLV to the buffer.
Signed-off-by: David Brown <david.brown@linaro.org>
David Brown