FWU: Set features with config header file

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: If12a00857dbfc67bb83f982528f63bbeb15eb006
diff --git a/config/config_base.h b/config/config_base.h
index d0562c6..e524db7 100644
--- a/config/config_base.h
+++ b/config/config_base.h
@@ -75,4 +75,12 @@
 /* The stack size of the Crypto Secure Partition */
 #define CRYPTO_STACK_SIZE                      0x1B00
 
+/* FWU Partition Configs */
+
+/* Size of the FWU internal data transfer buffer */
+#define TFM_FWU_BUF_SIZE                       PSA_FWU_MAX_WRITE_SIZE
+
+/* The stack size of the Firmware Update Secure Partition */
+#define FWU_STACK_SIZE                         0x600
+
 #endif /* __CONFIG_BASE_H__ */