Moved RPB contribute to inside RPB folder

Signed-off-by: Robert Wolff <robert.wolff@linaro.org>

Reference-Platform/Contribute/RPK/README.md

@@ -0,0 +1,29 @@
+# Reference Platform Kernel
+
+Instructions on how/where to submit patches for the Reference Platform Kernel
+
+### Contribute
+
+- Submit patch to Linux upstream
+   - https://github.com/torvalds/linux
+   - https://www.kernel.org/doc/Documentation/SubmittingPatches
+
+###### Patch accepted upstream
+
+- If patch submitted upstream, and accepted by a Linux developer:
+   - Patch is ready for the RPK
+   - Submit through the 96Boards developer Mailing list
+   - dev@lists.96boards.org
+
+###### Patch under review - not accepted upstream
+
+- If patch is submitted upstream, and under review by a Linux developer:
+   - Patch is not yet ready for the RPK
+   - Please review Reference Platform [Kernel Policy](../../Reference-Platform/KernelPolicy.md) for more information
+   - When patch is ready for the RPK, submit all patches through the 96Boards developer Mailing list
+   - dev@lists.96boards.org
+
+***
+
+
+