doc: Add patch submission guidelines
doc: Add patch submission guidelines

Add file submitting-patches.txt. A large portion of the file is copied
from the Linux kernel, /Documentation/SubmittingPatches, and credited
appropriately.

Signed-off-by: Chad Versace <a557f7f75bf28dc19ac99107f5cc7cd6b3fbdb1a@linux.intel.com>

janesma/waffle,waffle-gl/waffle,fjhenigman/waffle,chadversary/waffle,janesma/waffle,evelikov/waffle,yinquan529/waffle-gl-waffle,waffle-gl/waffle,dcbaker/waffle,yinquan529/waffle-gl-waffle,evelikov/waffle,fjhenigman/waffle,waffle-gl/waffle,evelikov/waffle,yinquan529/waffle-gl-waffle,chadversary/waffle,maurossi/waffle,janesma/waffle,waffle-gl/waffle,fjhenigman/waffle,maurossi/waffle,dcbaker/waffle,dcbaker/waffle,maurossi/waffle,chadversary/waffle