Add configuable shared memory address for openAMP samples. There is a
plan to add more platforms supported for openAMP in zephyr.
Each platform can specify the shared memory address and device by
device tree and add it's support in openAMP samples.
Signed-off-by: Karl Zhang <karl.zhang@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The v2018.10 release of OpenAMP reworks the API set and splits the
remoteproc vs rpmsg interfaces so one can use rpmsg without remoteproc.
This helps drastically reduce the code footprint utilized by OpenAMP.
The remote see around 4k reduction in code size.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>