hwmon: rename CONFIG_DS1722 to CONFIG_DTT_DS1722

Signed-off-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/sc520_spunk.h b/include/configs/sc520_spunk.h
index 051b2e0..072675b 100644
--- a/include/configs/sc520_spunk.h
+++ b/include/configs/sc520_spunk.h
@@ -144,7 +144,7 @@
 
 #define CONFIG_SPI_EEPROM       /* SPI EEPROMs such as AT25010 or AT25640 */
 #define CONFIG_MW_EEPROM        /* MicroWire EEPROMS such as AT93LC46 */
-#define CONFIG_DS1722           /* Dallas DS1722 SPI Temperature probe */
+#define CONFIG_DTT_DS1722       /* Dallas DS1722 SPI Temperature probe */
 
 
 /* allow to overwrite serial and ethaddr */