of: batterydata: Introduce DT support for battery data

Add the of_batterydata driver to parse device tree battery data.

Battery data contains battery profile information and is used by the
charger and the BMS drivers.

Change-Id: Ibe03800be0d51e82194c9385c6348c5a6c92711d
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index 61a99f2..8b52306 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -16,3 +16,4 @@
 obj-$(CONFIG_OF_MTD)	+= of_mtd.o
 obj-$(CONFIG_OF_SLIMBUS)	+= of_slimbus.o
 obj-$(CONFIG_OF_CORESIGHT) += of_coresight.o
+obj-$(CONFIG_OF_BATTERYDATA)	+= of_batterydata.o