fusee/exo: BYOK support for 6.2.0. Proper support TODO.

exosphere/src/smc_api.c

@@ -159,6 +159,7 @@ void set_version_specific_smcs(void) {
             break;
         case EXOSPHERE_TARGET_FIRMWARE_500:
         case EXOSPHERE_TARGET_FIRMWARE_600:
+        case EXOSPHERE_TARGET_FIRMWARE_620:
             /* No more LoadSecureExpModKey. */
             g_smc_user_table[0xE].handler = NULL;
             g_smc_user_table[0xC].id = 0xC300D60C;