crypto: stm32: use PKA IP for ECC algorithm

Add PKA IP drivers, and add hooks in OP-TEE crypto framework to use
PKA IP to do ECC process.

Truncate hash during ECDSA signature according to the NIST

crypto: stm32: use PKA IP for ECC algorithm

Add PKA IP drivers, and add hooks in OP-TEE crypto framework to use
PKA IP to do ECC process.

Truncate hash during ECDSA signature according to the NIST
recommendation:
https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-5.pdf

Signed-off-by: Thomas Bourgoin <thomas.bourgoin@foss.st.com>
Co-developed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Nicolas Toromanoff <nicolas.toromanoff@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Reviewed-by: Gatien Chevallier <gatien.chevallier@foss.st.com>

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