build: enable adding MbedTLS files for platform

The platform.mk can add extra MbedTLS source files to LIBMBEDTLS_SRC.

Change-Id: Ida9abfd59d8b02eae23ec0a7f326db060b42bf49
Signed-off-by: Mate Toth-Pal <mate.toth-pal@arm.com>

diff --git a/drivers/auth/mbedtls/mbedtls_common.mk b/drivers/auth/mbedtls/mbedtls_common.mk
index 16ce65ffe68e725c145f13a560b7e3b2d482284c..ae4b0676bfbd2047b121b415122ac26d163d61ac 100644 (file)
--- a/drivers/auth/mbedtls/mbedtls_common.mk
+++ b/drivers/auth/mbedtls/mbedtls_common.mk
@@ -22,7 +22,7 @@ $(eval $(call add_define,MBEDTLS_CONFIG_FILE))
 MBEDTLS_SOURCES        +=              drivers/auth/mbedtls/mbedtls_common.c
 
 
-LIBMBEDTLS_SRCS                := $(addprefix ${MBEDTLS_DIR}/library/, \
+LIBMBEDTLS_SRCS                += $(addprefix ${MBEDTLS_DIR}/library/, \
                                        aes.c                                   \
                                        asn1parse.c                             \
                                        asn1write.c                             \