Improve comments & messages

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/docs/architecture/psa-migration/outcome-analysis.sh b/docs/architecture/psa-migration/outcome-analysis.sh
index 2134c5b..81ab691 100755
--- a/docs/architecture/psa-migration/outcome-analysis.sh
+++ b/docs/architecture/psa-migration/outcome-analysis.sh
@@ -47,7 +47,7 @@
 IGNORE="md mdx shax" # accelerated
 IGNORE="$IGNORE entropy hmac_drbg random" # disabled (ext. RNG)
 IGNORE="$IGNORE psa_crypto_init" # needs internal RNG
-IGNORE="$IGNORE hkdf" # disabled
+IGNORE="$IGNORE hkdf" # disabled in the all.sh component tested
 # Compare only "reference vs driver" or also "before vs after"?
 BEFORE_AFTER=1 # 0 or 1
 # ----- END edit this -----
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index e794d08..7b93fce 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -2043,7 +2043,7 @@
     # Also unset MD_C and things that depend on it;
     # see component_test_crypto_full_no_md.
     scripts/config.py unset MBEDTLS_MD_C
-    scripts/config.py unset MBEDTLS_HKDF_C
+    scripts/config.py unset MBEDTLS_HKDF_C # has independent PSA implementation
     scripts/config.py unset MBEDTLS_HMAC_DRBG_C
     scripts/config.py unset MBEDTLS_ECDSA_DETERMINISTIC
     scripts/config.py -f include/psa/crypto_config.h unset PSA_WANT_ALG_DETERMINISTIC_ECDSA
@@ -2071,7 +2071,7 @@
         msg "test: compat.sh, MBEDTLS_PSA_CRYPTO_CONFIG with accelerated hash and USE_PSA"
         tests/compat.sh
     else
-        echo "skip sh scripts"
+        echo "skip ssl-opt.sh and compat.sh"
     fi
 }