image: Rename load_addr, save_addr, save_size

These global variables are quite short and generic. In fact the same name
is more often used locally for struct members and function arguments.

Add a image_ prefix to make them easier to distinguish.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/ddr/marvell/a38x/ddr3_training_ip_engine.c

@@ -612,9 +612,9 @@ int ddr3_tip_load_pattern_to_odpg(u32 dev_num, enum hws_access_type access_type,
 			      MASK_ALL_BITS));
 	}
 
-	CHECK_STATUS(ddr3_tip_if_write
-		     (dev_num, access_type, if_id,
-		      ODPG_DATA_BUFFER_OFFS_REG, load_addr, MASK_ALL_BITS));
+	CHECK_STATUS(ddr3_tip_if_write(dev_num, access_type, if_id,
+				       ODPG_DATA_BUFFER_OFFS_REG,
+				       image_load_addr, MASK_ALL_BITS));
 
 	return MV_OK;
 }