[Openamp-rp] [PATCH 0/6] Add Large buffers Demo

Add proof of concept demo showing the use of RPMsg payloads with payload information as pointer to large buffer in a contiguously laid out memory space between APU and RPU with RPMsg userspace on the APU side and baremetal on the RPU side.

Ben Levinsky (6): apps: add out of band rpmsg echo demo apps: oob echo: change message to timestamp and fix alignment apps: oob echo : remove unused variables and fix apu side waiting apps: oob echo: move code common in multiple files to header apps: oob echo: remove commented out line apps: oob echo: change packet fields to unsigned int