Rename polaris to corstone310

The polaris platform was renamed so the path
and name had to be updated.

Change-Id: I1c4aea9ab6c4311459a661a88054e7b88df16122
diff --git a/build_helper/build_helper_configs.py b/build_helper/build_helper_configs.py
index 3ed5901..bbdebb9 100755
--- a/build_helper/build_helper_configs.py
+++ b/build_helper/build_helper_configs.py
@@ -677,8 +677,8 @@
                 "invalid": _common_tfm_invalid_configs + []
                 }
 
-config_corstone_polaris = {"seed_params": {
-                "tfm_platform":     ["arm/mps3/corstone_polaris"],
+config_corstone310 = {"seed_params": {
+                "tfm_platform":     ["arm/mps3/corstone310_fvp"],
                 "compiler":         ["GCC_10_3"],
                 "lib_model":        [False],
                 "isolation_level":  ["1"],
@@ -985,7 +985,7 @@
                     "nightly_an547": config_an547,
                     "nightly_an552": config_an552,
                     "nightly_musca_b1_se": config_musca_b1_se,
-                    "nightly_polaris": config_corstone_polaris,
+                    "nightly_corstone310": config_corstone310,
                     "nightly_corstone1000": config_corstone1000,
                     "nightly_psoc64": config_psoc64,
                     "nightly_stm32l562e_dk": config_stm32l562e_dk,
@@ -1003,7 +1003,7 @@
                     "release_mmio": config_mmio,
                     "release_an547": config_an547,
                     "release_an552": config_an552,
-                    "release_polaris": config_corstone_polaris,
+                    "release_corstone310": config_corstone310,
                     "release_psoc64": config_psoc64,
                     "release_stm32l562e_dk": config_stm32l562e_dk,
                     "release_lpcxpresso55s69": config_lpcxpresso55s69,
@@ -1025,7 +1025,7 @@
                     "musca_b1": config_musca_b1,
                     "musca_b1_se": config_musca_b1_se,
                     "musca_s1": config_musca_s1,
-                    "corstone_polaris": config_corstone_polaris,
+                    "corstone310": config_corstone310,
                     "cypress_psoc64": config_psoc64,
                     "corstone1000": config_corstone1000,
                     "stm_stm32l562e_dk": config_stm32l562e_dk,