Refactor and improve interuptible key agreement builtin implementation

- rename psa_driver_wrapper_key_agreement_xxx to
  psa_driver_wrapper_key_agreement_iop_xxx.
- reorganise the paraemters of psa_driver_wrapper_key_agreement_setup

Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/tf-psa-crypto/core/psa_crypto_core.h b/tf-psa-crypto/core/psa_crypto_core.h
index c23b0b2..ea30bf1 100644
--- a/tf-psa-crypto/core/psa_crypto_core.h
+++ b/tf-psa-crypto/core/psa_crypto_core.h
@@ -702,7 +702,7 @@
 
 /**
  * \brief Get the total number of ops that a key agreement operation has taken
- *        Since its start.
+ *        since its start.
  *
  * \note The signature of this function is that of a PSA driver
  *       key_agreement_get_num_ops entry point. This function behaves as an
@@ -714,7 +714,7 @@
  *
  * \return                      Total number of operations.
  */
-uint32_t mbedtls_psa_key_agreement_get_num_ops(
+uint32_t mbedtls_psa_key_agreement_iop_get_num_ops(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation);
 
 /**
@@ -748,13 +748,13 @@
  * \retval #PSA_ERROR_INSUFFICIENT_MEMORY
  *         There was insufficient memory to load the key representation.
  */
-psa_status_t mbedtls_psa_key_agreement_setup(
+psa_status_t mbedtls_psa_key_agreement_iop_setup(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation,
+    const psa_key_attributes_t *private_key_attributes,
     const uint8_t *private_key_buffer,
     size_t private_key_buffer_len,
     const uint8_t *peer_key,
-    size_t peer_key_length,
-    const psa_key_attributes_t *attributes);
+    size_t peer_key_length);
 
 /**
  * \brief Continue and eventually complete a key agreement operation.
@@ -780,7 +780,7 @@
  * \retval #PSA_ERROR_BUFFER_TOO_SMALL
  *         \p shared_secret_size is too small
  */
-psa_status_t mbedtls_psa_key_agreement_complete(
+psa_status_t mbedtls_psa_key_agreement_iop_complete(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation,
     uint8_t *shared_secret,
     size_t shared_secret_size,
@@ -800,7 +800,7 @@
  * \retval #PSA_SUCCESS
  *         The operation was aborted successfully.
  */
-psa_status_t mbedtls_psa_key_agreement_abort(
+psa_status_t mbedtls_psa_key_agreement_iop_abort(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation);
 
 
diff --git a/tf-psa-crypto/drivers/builtin/src/psa_crypto_ecp.c b/tf-psa-crypto/drivers/builtin/src/psa_crypto_ecp.c
index 949bf3b..57b10c9 100644
--- a/tf-psa-crypto/drivers/builtin/src/psa_crypto_ecp.c
+++ b/tf-psa-crypto/drivers/builtin/src/psa_crypto_ecp.c
@@ -632,19 +632,19 @@
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH) && defined(MBEDTLS_ECP_RESTARTABLE)
 
-uint32_t mbedtls_psa_key_agreement_get_num_ops(
+uint32_t mbedtls_psa_key_agreement_iop_get_num_ops(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation)
 {
     return operation->num_ops;
 }
 
-psa_status_t mbedtls_psa_key_agreement_setup(
+psa_status_t mbedtls_psa_key_agreement_iop_setup(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation,
+    const psa_key_attributes_t *private_key_attributes,
     const uint8_t *private_key_buffer,
     size_t private_key_buffer_len,
     const uint8_t *peer_key,
-    size_t peer_key_length,
-    const psa_key_attributes_t *attributes)
+    size_t peer_key_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     mbedtls_ecp_keypair *our_key = NULL;
@@ -658,8 +658,8 @@
     operation->num_ops = 0;
 
     status = mbedtls_psa_ecp_load_representation(
-        psa_get_key_type(attributes),
-        psa_get_key_bits(attributes),
+        psa_get_key_type(private_key_attributes),
+        psa_get_key_bits(private_key_attributes),
         private_key_buffer,
         private_key_buffer_len,
         &our_key);
@@ -678,8 +678,8 @@
     our_key = NULL;
 
     status = mbedtls_psa_ecp_load_representation(
-        PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR(psa_get_key_type(attributes)),
-        psa_get_key_bits(attributes),
+        PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR(psa_get_key_type(private_key_attributes)),
+        psa_get_key_bits(private_key_attributes),
         peer_key,
         peer_key_length,
         &their_key);
@@ -705,7 +705,7 @@
     return status;
 }
 
-psa_status_t mbedtls_psa_key_agreement_complete(
+psa_status_t mbedtls_psa_key_agreement_iop_complete(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation,
     uint8_t *shared_secret,
     size_t shared_secret_size,
@@ -726,7 +726,7 @@
     return status;
 }
 
-psa_status_t mbedtls_psa_key_agreement_abort(
+psa_status_t mbedtls_psa_key_agreement_iop_abort(
     mbedtls_psa_key_agreement_interruptible_operation_t *operation)
 {
     operation->num_ops = 0;