docs/submitting patches: add git tips

v2: [Emil Velikov]
 - Add the shorthand git send-email -vX
 - Move to submittingpatches.html
 - Add to the TOC.

v3: [Emil Velikov]
 - Use @~8 instead of HEAD~8 (Nicolai)

Cc: Timothy Arceri <t_arceri@yahoo.com.au>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Brian Paul <brianp@vmware.com> (v1)
1 file changed