Ethos-U PMU monitor

Add Python script demonstrating how to download performance data
from device.

Write baremetal PMU events to Event Recorder ring buffer and increase
the systick sample rate.

Change-Id: Ib73c56100a8de2d7b74c455d8f80cda0b59383da
diff --git a/scripts/ethosumonitor/sample.json b/scripts/ethosumonitor/sample.json
new file mode 100644
index 0000000..537e95a
--- /dev/null
+++ b/scripts/ethosumonitor/sample.json
@@ -0,0 +1,19 @@
+{
+    "__comment__": [
+        "'host' is the Linux physical address accessible from /dev/mem.",
+        "'device' is the corresponding device address.",
+        "'size' is the size in bytes of the memory region."
+    ],
+    "memoryMap": [
+        {
+            "host": "0x6cf00000",
+            "device": "0x00000000",
+            "size": "0x00400000"
+        },
+        {
+            "host": "0x84000000",
+            "device": "0x64000000",
+            "size": "0x01000000"
+        }
+    ]
+}