[oe] Adding PXA270 based Machine....

[balakrishnan]

         I going to add pxa270 based machine with Angstrom distribution
to OE, regarding this can I have answer of list of my doubts...   

1.Whether I can send machine conf ,linux recipes, U-Boot recipes and
Image recipes are in single patch or separated patch?  
2.If OE-Dev mailing list accepted my patches then, what is my next step?
3.If it commited by myself then, what commit rights I have?
4.Can I commit with out "Signed-off-by" line?

Thank You
J.Balakrishnan