This patch series transitions the documentation for remoteproc from the staging directory to the mainline kernel. It introduces both kernel and user-space APIs, enhancing the overall documentation quality. V4: Fixed compilation errors and moved documentation to driver-api directory. V3: Seperated out the patches further to make the intention clear for each patch. V2: Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202410161444.jOKMsoGS-lkp@xxxxxxxxx/