MeasuredBoot: MEASUREMENT_BOOT_HASH_ALG is renamed

Rename MEASUREMENT_BOOT_HASH_ALG to PSA_MEASUREMENT_HASH_ALG.
Also make sure that the Measured Boot partition links correctly
against the psa_crypto_config header to get access to PSA config
and definitions.

Signed-off-by: Joel Goddard <joel.goddard@arm.com>
Change-Id: I12103809ae5edc82bff7887c0995fdeef4c600b8
3 files changed