mboxd: Rename windows files

Change-Id: I44e110906fd0f751f8f34b175f971e65896a7301
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/test/Makefile.am.include b/test/Makefile.am.include
index 3af58e5..d85dac3 100644
--- a/test/Makefile.am.include
+++ b/test/Makefile.am.include
@@ -20,7 +20,7 @@
 
 TEST_MBOX_SRCS = \
 	mboxd_msg.c \
-	mboxd_windows.c \
+	windows.c \
 	lpc.c \
 	lpc_reset.c \
 	common.c \