scripts/*: add scripts for jtag tapping on lm32
emb-sw/lib/*: ethmac/board.h gets searched too! Deleted

The ethmac/board.h was deleted as it caused errors
in the software.
Merge branch 'emb-sw-devel' into ebone-hw-support
hdl/*/syn/loader/: add impact mode fpga loader
update general-cores submodule reference