PSA PAKE: introduce psa_pake_family_t

It is the size of something that has no a priori reason to consist of 8
bits.  This should be psa_pake_family_t, both for documentation (and
possibly static analysis) and in case 8 bits turn out not to be enough.

Signed-off-by: Janos Follath <janos.follath@arm.com>
diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index df8d4d4..970aea3 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -4222,7 +4222,7 @@
  *
  * \return The primitive family stored in the cipher suite structure.
  */
-static uint8_t psa_pake_cs_get_family(
+static psa_pake_family_t psa_pake_cs_get_family(
                            const psa_pake_cipher_suite_t* cipher_suite
                            );
 
@@ -4246,7 +4246,7 @@
  */
 static void psa_pake_cs_set_family(
                            psa_pake_cipher_suite_t* cipher_suite,
-                           uint8_t family
+                           psa_pake_family_t family
                            );
 
 /** Retrieve the size associated with the primitive from a PAKE cipher suite.