Add SPI serialization/deserialization for the cameras

Change-Id: Ide6b13de583a65907ff2b927a2a6fd1fc507a5b0
diff --git a/third_party/pycrc/BUILD b/third_party/pycrc/BUILD
new file mode 100644
index 0000000..50a21e1
--- /dev/null
+++ b/third_party/pycrc/BUILD
@@ -0,0 +1,25 @@
+licenses(["notice"])
+
+genrule(
+    name = "copy_main",
+    srcs = [
+        "pycrc.py",
+    ],
+    outs = [
+        "pycrc_main.py",
+    ],
+    cmd = "cp $< $@",
+)
+
+py_binary(
+    name = "pycrc_main",
+    srcs = glob([
+        "pycrc/*.py",
+    ]) + [
+        "pycrc_main.py",
+    ],
+    imports = ["."],
+    legacy_create_init = False,
+    main = "pycrc_main.py",
+    visibility = ["//visibility:public"],
+)