refactor(mbedtls): rename default mbedtls confs

Change the name of these confs to be version agnostic,
we will later use these configs to enforce the mbedtls
minimum version

Change-Id: I1f665c2471877ecc833270c511749ff845046f10
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
diff --git a/drivers/auth/mbedtls/mbedtls_common.mk b/drivers/auth/mbedtls/mbedtls_common.mk
index 765491e..b3c4c91 100644
--- a/drivers/auth/mbedtls/mbedtls_common.mk
+++ b/drivers/auth/mbedtls/mbedtls_common.mk
@@ -25,9 +25,9 @@
 
 # Specify mbed TLS configuration file
 ifeq (${PSA_CRYPTO},1)
-  MBEDTLS_CONFIG_FILE    ?=    "<drivers/auth/mbedtls/psa_mbedtls_config.h>"
+  MBEDTLS_CONFIG_FILE    ?=    "<drivers/auth/mbedtls/default_psa_mbedtls_config.h>"
 else
-  MBEDTLS_CONFIG_FILE    ?=    "<drivers/auth/mbedtls/mbedtls_config-3.h>"
+  MBEDTLS_CONFIG_FILE    ?=    "<drivers/auth/mbedtls/default_mbedtls_config.h>"
 endif
 
 $(eval $(call add_define,MBEDTLS_CONFIG_FILE))