Add Ti50 firmware builder entry point.

BUG=b:175793144
TEST=None

Change-Id: I8b02ed6f1aae39b672b65ac00a7f305fc3f8d21e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2605236
Tested-by: Andrew Luo <aluo@chromium.org>
Commit-Queue: Andrew Luo <aluo@chromium.org>
Reviewed-by: LaMont Jones <lamontjones@chromium.org>
diff --git a/api/controller/firmware.py b/api/controller/firmware.py
index 4b0ffbc..298681c 100644
--- a/api/controller/firmware.py
+++ b/api/controller/firmware.py
@@ -26,6 +26,8 @@
     fw_path = 'src/platform/ec/'
   elif fw_loc == firmware_pb2.PLATFORM_ZEPHYR:
     fw_path = 'src/platform/zephyr-chrome/'
+  elif fw_loc == firmware_pb2.PLATFORM_TI50:
+    fw_path = 'src/platform/ti50/'
   else:
     cros_build_lib.Die(f'Unknown firmware location {fw_loc}!')