Updated wrc.ram and ep_pfilter.c in extra folder.

	- New wrc.ram file with updated filter rules.
	- Deleted unnecessary wrc_without_etherbone.ram file.
	- Deleted unnecessary ep_pfilter_old.c file in extra folder.
	- Updated ep_pfilter.c file in extra folder.
patches: Folder contains patches to be applied to submodules.

	+ general-cores: Increase uart fifo size
doc: project document revised and updated
ip_cores: submodules updated