Hanno Becker 87837b2ec6 Add internal header for PSA utility functions
This commit adds the header file mbedtls/psa_util.h which contains
static utility functions `mbedtls_psa_xxx()` used in the integration
of PSA Crypto into Mbed TLS.

Warning: These functions are internal only and may change at any time.
2018-11-21 21:08:42 +00:00
..