Move MBEDTLS_ECP_WITH_MPI_UINT to mbedtls_config.h

There is a precedent for having bigger and less mature options in
mbedtls_config.h (MBEDTLS_USE_PSA_CRYPTO) for an extended period.
Having this option in mbedtls_config.h is simpler and more robust.

Signed-off-by: Janos Follath <janos.follath@arm.com>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index a1dcb8d..c47b767 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -134,14 +134,13 @@
     CONFIG_H='include/mbedtls/mbedtls_config.h'
     CRYPTO_CONFIG_H='include/psa/crypto_config.h'
     CONFIG_TEST_DRIVER_H='tests/include/test/drivers/config_test_driver.h'
-    CONFIG_NEW_BIGNUM_H='library/ecp_invasive.h'
 
     # Files that are clobbered by some jobs will be backed up. Use a different
     # suffix from auxiliary scripts so that all.sh and auxiliary scripts can
     # independently decide when to remove the backup file.
     backup_suffix='.all.bak'
     # Files clobbered by config.py
-    files_to_back_up="$CONFIG_H $CRYPTO_CONFIG_H $CONFIG_TEST_DRIVER_H $CONFIG_NEW_BIGNUM_H"
+    files_to_back_up="$CONFIG_H $CRYPTO_CONFIG_H $CONFIG_TEST_DRIVER_H"
     # Files clobbered by in-tree cmake
     files_to_back_up="$files_to_back_up Makefile library/Makefile programs/Makefile tests/Makefile programs/fuzz/Makefile"
 
@@ -1029,7 +1028,7 @@
 
 component_test_default_cmake_gcc_asan_new_bignum () {
     msg "build: cmake, gcc, ASan" # ~ 1 min 50s
-    scripts/config.py -f "$CONFIG_NEW_BIGNUM_H" set MBEDTLS_ECP_WITH_MPI_UINT
+    scripts/config.py set MBEDTLS_ECP_WITH_MPI_UINT
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
 
@@ -1088,7 +1087,7 @@
 component_test_full_cmake_gcc_asan_new_bignum () {
     msg "build: full config, cmake, gcc, ASan"
     scripts/config.py full
-    scripts/config.py -f "$CONFIG_NEW_BIGNUM_H" set MBEDTLS_ECP_WITH_MPI_UINT
+    scripts/config.py set MBEDTLS_ECP_WITH_MPI_UINT
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
 
@@ -1125,7 +1124,7 @@
     msg "build: full config, cmake, gcc, ASan"
     scripts/config.py full
     scripts/config.py set MBEDTLS_TEST_HOOKS
-    scripts/config.py -f "$CONFIG_NEW_BIGNUM_H" set MBEDTLS_ECP_WITH_MPI_UINT
+    scripts/config.py set MBEDTLS_ECP_WITH_MPI_UINT
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
 
@@ -4216,7 +4215,7 @@
     scripts/config.py unset MBEDTLS_PADLOCK_C
     scripts/config.py unset MBEDTLS_AESCE_C
     scripts/config.py set MBEDTLS_TEST_HOOKS
-    scripts/config.py -f "$CONFIG_NEW_BIGNUM_H" set MBEDTLS_ECP_WITH_MPI_UINT
+    scripts/config.py set MBEDTLS_ECP_WITH_MPI_UINT
     make CC=gcc CFLAGS="$ASAN_CFLAGS -Werror -Wall -Wextra -DMBEDTLS_HAVE_INT32" LDFLAGS="$ASAN_CFLAGS"
 
     msg "test: gcc, force 32-bit bignum limbs, new bignum interface, test hooks (ASan build)"