Enable AES countermeasures in baremetal config

Enable AES countermeasures in baremetal configuration.
diff --git a/configs/baremetal.h b/configs/baremetal.h
index 3d0fac5..5294351 100644
--- a/configs/baremetal.h
+++ b/configs/baremetal.h
@@ -41,6 +41,7 @@
 #define MBEDTLS_AES_FEWER_TABLES
 #define MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH
 #define MBEDTLS_AES_ONLY_ENCRYPT
+#define MBEDTLS_AES_SCA_COUNTERMEASURES
 #define MBEDTLS_CCM_C
 
 /* Asymmetric crypto: Single-curve ECC only. */