Add basic rpi2040 blink demo app

Phew, things build!  Lets check in how far we got.

Change-Id: Id82e2f4c73eed6620b2b4661726f931e79a6b0c1
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/debian/gstreamer.BUILD b/debian/gstreamer.BUILD
index 7c3e569..205db5a 100644
--- a/debian/gstreamer.BUILD
+++ b/debian/gstreamer.BUILD
@@ -160,6 +160,7 @@
             "usr/lib/arm-linux-gnueabihf/libxml2.so.2",
         ],
         "cortex-m": [],
+        "cortex-m0plus": [],
     }),
     hdrs = glob([
         "usr/lib/x86_64-linux-gnu/glib-2.0/include/**/*.h",
@@ -180,10 +181,9 @@
             "usr/include/glib-2.0",
             "usr/include/gstreamer-1.0",
         ],
-        "roborio": [
-        ],
-        "cortex-m": [
-        ],
+        "roborio": [],
+        "cortex-m": [],
+        "cortex-m0plus": [],
     }),
     linkopts = [
         "-ldl",