ctcm: rename READ/WRITE defines to avoid redefinitions

READ/WRITE seems to be a bit too generic for defines in a device
driver. Just rename them to CTCM_READ/CTCM_WRITE to avoid warnings.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/s390/net/ctcm_main.h b/drivers/s390/net/ctcm_main.h
index d34fa14..24d5215 100644
--- a/drivers/s390/net/ctcm_main.h
+++ b/drivers/s390/net/ctcm_main.h
@@ -111,8 +111,8 @@
 
 #define CTCM_INITIAL_BLOCKLEN	2
 
-#define READ			0
-#define WRITE			1
+#define CTCM_READ		0
+#define CTCM_WRITE		1
 
 #define CTCM_ID_SIZE		20+3