DM: thermal: Add imx thermal DM driver

Add a new thermal uclass for thermal sensor and implement the imx
thermal driver basing on this uclass.

Signed-off-by: Ye.Li <B37916@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
new file mode 100644
index 0000000..6d4cacd
--- /dev/null
+++ b/drivers/thermal/Makefile
@@ -0,0 +1,9 @@
+#
+# (C) Copyright 2014 Freescale Semiconductor, Inc.
+# Author: Nitin Garg <nitin.garg@freescale.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-$(CONFIG_DM_THERMAL) += thermal-uclass.o
+obj-$(CONFIG_IMX6_THERMAL) += imx_thermal.o