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Add qtestsign tool.this is necessary to sign the u-boot for rb3gen2 board.
qtestsign is a simple tool to "sign" ELF Qualcomm firmware
images using a dummy certificate chain ("test keys").
It partially implements the image format described in Qualcomm's
whitepaper "Secure Boot and Image Authentication"
(both v1.0 and v2.0) by extending ELF images with a
Qualcomm-specific "hash segment", consisting of:
References:
- https://www.linaro.org/blog/initial-u-boot-release-for-qualcomm-platforms/
Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com>