windows: Rename write_from_window* to window_flush*

Change-Id: I17b3457c1689114e76652632358faca3a5130d9d
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/windows.h b/windows.h
index 002e507..dae8bd1 100644
--- a/windows.h
+++ b/windows.h
@@ -13,9 +13,9 @@
 int windows_init(struct mbox_context *context);
 void windows_free(struct mbox_context *context);
 /* Write From Window Functions */
-int write_from_window_v1(struct mbox_context *context,
+int window_flush_v1(struct mbox_context *context,
 			 uint32_t offset_bytes, uint32_t count_bytes);
-int write_from_window(struct mbox_context *context, uint32_t offset,
+int window_flush(struct mbox_context *context, uint32_t offset,
 		      uint32_t count, uint8_t type);
 /* Window Management Functions */
 void alloc_window_dirty_bytemap(struct mbox_context *context);