Add comments to accel_ecdsa component

Slightly re-organize (accel list at the top).

No need to disable USE_PSA or TLS 1.3 because they're already that way
in the default config.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index c949a6a..82ad682 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1965,6 +1965,12 @@
 component_test_psa_crypto_config_accel_ecdsa () {
     msg "test: MBEDTLS_PSA_CRYPTO_CONFIG with accelerated ECDSA"
 
+    # Algorithms and key types to accelerate
+    loc_accel_list="ALG_ECDSA ALG_DETERMINISTIC_ECDSA KEY_TYPE_ECC_KEY_PAIR KEY_TYPE_ECC_PUBLIC_KEY"
+
+    # Configure and build the test driver library
+    # -------------------------------------------
+
     # Disable ALG_STREAM_CIPHER and ALG_ECB_NO_PADDING to avoid having
     # partial support for cipher operations in the driver test library.
     scripts/config.py -f include/psa/crypto_config.h unset PSA_WANT_ALG_STREAM_CIPHER
@@ -1975,23 +1981,33 @@
     scripts/config.py -f tests/include/test/drivers/config_test_driver.h set MBEDTLS_SHA384_C
     scripts/config.py -f tests/include/test/drivers/config_test_driver.h set MBEDTLS_SHA512_C
 
-    loc_accel_list="ALG_ECDSA ALG_DETERMINISTIC_ECDSA KEY_TYPE_ECC_KEY_PAIR KEY_TYPE_ECC_PUBLIC_KEY"
     loc_accel_flags=$( echo "$loc_accel_list" | sed 's/[^ ]* */-DLIBTESTDRIVER1_MBEDTLS_PSA_ACCEL_&/g' )
     make -C tests libtestdriver1.a CFLAGS="$ASAN_CFLAGS $loc_accel_flags" LDFLAGS="$ASAN_CFLAGS"
 
+    # Configure and build the test driver library
+    # -------------------------------------------
+
+    # Start from default config (no USE_PSA or TLS 1.3) + driver support
     scripts/config.py set MBEDTLS_PSA_CRYPTO_DRIVERS
     scripts/config.py set MBEDTLS_PSA_CRYPTO_CONFIG
-    scripts/config.py unset MBEDTLS_USE_PSA_CRYPTO
-    scripts/config.py unset MBEDTLS_SSL_PROTO_TLS1_3
+
+    # Disable the module that's accelerated
     scripts/config.py unset MBEDTLS_ECDSA_C
+
+    # Disable things that depend on it
     scripts/config.py unset MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
     scripts/config.py unset MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
 
+    # Build the library
     loc_accel_flags="$loc_accel_flags $( echo "$loc_accel_list" | sed 's/[^ ]* */-DMBEDTLS_PSA_ACCEL_&/g' )"
     make CFLAGS="$ASAN_CFLAGS -O -Werror -I../tests/include -I../tests -I../../tests -DPSA_CRYPTO_DRIVER_TEST -DMBEDTLS_TEST_LIBTESTDRIVER1 $loc_accel_flags" LDFLAGS="-ltestdriver1 $ASAN_CFLAGS"
 
+    # Make sure ECDSA was not re-enabled by accident (additive config)
     not grep mbedtls_ecdsa_ library/ecdsa.o
 
+    # Run the tests
+    # -------------
+
     msg "test: MBEDTLS_PSA_CRYPTO_CONFIG with accelerated ECDSA"
     make test
 }