btool: mkeficapsule: Add a bintool for EFI capsule generation

Add a bintool for generating EFI capsules. This calls the mkeficapsule
tool which generates the capsules.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed