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/galileo.h b/include/configs/galileo.h
index 2f1f6d4..40f7fba 100644
--- a/include/configs/galileo.h
+++ b/include/configs/galileo.h
@@ -29,7 +29,7 @@
 
 /* SATA is not supported in Quark SoC */
 #undef CONFIG_SCSI_AHCI
-#undef CONFIG_CMD_SCSI
+#undef CONFIG_SCSI
 
 /* Video is not supported in Quark SoC */
 #undef CONFIG_VIDEO