Build chip data from new JSON format

The chip data XML format has been deprecated and the new JSON format
will be used going forward.

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: I2f44ae7bb921c9ab38c2664ab5cc2a9d6e2fd66a
diff --git a/chip_data/.gitignore b/chip_data/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/chip_data/.gitignore
@@ -0,0 +1 @@
+/build