dm: scsi: Rename CONFIG_CMD_SCSI to CONFIG_SCSI

This option currently enables both the command and the SCSI functionality.
Rename the existing option to CONFIG_SCSI since most of the code relates
to the feature.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/MPC8572DS.h b/include/configs/MPC8572DS.h
index 8c4e5e2..bb7f38e 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -576,7 +576,7 @@
 
 #if defined(CONFIG_PCI)
 #define CONFIG_CMD_PCI
-#define CONFIG_CMD_SCSI
+#define CONFIG_SCSI
 #endif
 
 /*