psa: Add psa_crypto_client.c

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/library/Makefile b/library/Makefile
index ae33bf2..b431cf5 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -118,6 +118,7 @@
 	     platform_util.o \
 	     poly1305.o \
 	     psa_crypto.o \
+	     psa_crypto_client.o \
 	     psa_crypto_driver_wrappers.o \
 	     psa_crypto_se.o \
 	     psa_crypto_slot_management.o \