added comments

updated .gitignore


updated Build_boot.sh to accept arguments better, added defaults.

Also updated gitignore

Added an script to load a bitfile over PCIe.

added kernel-module as submodule

updated default /dev entries to be compatible with new spec7-kernel-module.

added README

Signed-off-by: Mamta Shukla <mamta.ramendra.shukla@cern.ch>

copied processing_system_pcie.bd and created ps_pcie.bd with same processing system footprint as ps_pci_tandem.bd

Adjust .gitlab-ci.yml to new directory structure, viv_do_all leaves .bit, .mmi and .log files in directory work