Fix compiler issue when TRACE_LEVEL >= TRACE_DEBUG

Signed-off-by: Saksham Jain <saksham.jain@nxp.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Pascal Brand <pascal.brand@linaro.org>
diff --git a/ta/storage_benchmark/benchmark.c b/ta/storage_benchmark/benchmark.c
index 022557a..78e3014 100644
--- a/ta/storage_benchmark/benchmark.c
+++ b/ta/storage_benchmark/benchmark.c
@@ -135,7 +135,7 @@
 	while (remain_bytes) {
 		size_t write_size;
 
-		DMSG("Write data, remain bytes: %u", remain_bytes);
+		DMSG("Write data, remain bytes: %zu", remain_bytes);
 		if (chunk_size > remain_bytes)
 			write_size = remain_bytes;
 		else
@@ -175,7 +175,7 @@
 	while (remain_bytes) {
 		size_t read_size;
 
-		DMSG("Read data, remain bytes: %d", remain_bytes);
+		DMSG("Read data, remain bytes: %zu", remain_bytes);
 		if (remain_bytes < chunk_size)
 			read_size = remain_bytes;
 		else