doc: Add waffle-1.2.2 release notes
doc: Add waffle-1.2.2 release notes

Signed-off-by: Chad Versace <a557f7f75bf28dc19ac99107f5cc7cd6b3fbdb1a@linux.intel.com>
(cherry picked from commit 7dd52413a6835fab99073c38942921f7a6c81515)

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