Rename some signature-related identifiers

Rename some macros and functions related to signature which are
changing as part of the addition of psa_sign_message and
psa_verify_message.

perl -i -pe '%t = (
PSA_KEY_USAGE_SIGN => PSA_KEY_USAGE_SIGN_HASH,
PSA_KEY_USAGE_VERIFY => PSA_KEY_USAGE_VERIFY_HASH,
PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE => PSA_SIGNATURE_MAX_SIZE,
PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE => PSA_SIGN_OUTPUT_SIZE,
psa_asymmetric_sign => psa_sign_hash,
psa_asymmetric_verify => psa_verify_hash,
); s/\b(@{[join("|", keys %t)]})\b/$t{$1}/ge' $(git ls-files . ':!:**/crypto_compat.h')
diff --git a/include/mbedtls/pk.h b/include/mbedtls/pk.h
index 6343563..99e7a55 100644
--- a/include/mbedtls/pk.h
+++ b/include/mbedtls/pk.h
@@ -134,11 +134,11 @@
 #endif
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-#if PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE > MBEDTLS_PK_SIGNATURE_MAX_SIZE
-/* PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE is the maximum size of a signature made
+#if PSA_SIGNATURE_MAX_SIZE > MBEDTLS_PK_SIGNATURE_MAX_SIZE
+/* PSA_SIGNATURE_MAX_SIZE is the maximum size of a signature made
  * through the PSA API in the PSA representation. */
 #undef MBEDTLS_PK_SIGNATURE_MAX_SIZE
-#define MBEDTLS_PK_SIGNATURE_MAX_SIZE PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE
+#define MBEDTLS_PK_SIGNATURE_MAX_SIZE PSA_SIGNATURE_MAX_SIZE
 #endif
 
 #if PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE + 11 > MBEDTLS_PK_SIGNATURE_MAX_SIZE