Compared to the previous scheme, this avoid the problem of having to
warn about adjusting PSA_WANT in the wrong place.
Also, it allows enabling MBEDTLS_PSA_CRYPTO_CONFIG in adjust_config
rather than having to repeat it in every single component.
It also plays more nicely with components that have an associated
reference component and use a common config function. (Some of them were
already using the new order.)
Finally, "configure, build, run the tests" seems more natural than
"configure, build, configure, build, test" (and, coming back to the
initial point, it avoid questions about what to configure when).
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
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