Rename psa_generate_random_key back to psa_generate_key

generate_key is a more classical name. The longer name was only
introduced to avoid confusion with getting a key from a generator,
which is key derivation, but we no longer use the generator
terminology so this reason no longer applies.

perl -i -pe 's/psa_generate_random_key/psa_generate_key/g' $(git ls-files)
diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index 8064be5..de90b47 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -97,7 +97,7 @@
         return( PK_PSA_INVALID_SLOT );
 
     /* generate key */
-    if( PSA_SUCCESS != psa_generate_random_key_to_handle( key, type, bits, NULL, 0 ) )
+    if( PSA_SUCCESS != psa_generate_key_to_handle( key, type, bits, NULL, 0 ) )
         return( PK_PSA_INVALID_SLOT );
 
     return( key );