amazon-omap4-common: add common domx

- Updated to latest omapzoom sources
- Included fix for LOW SECURE HEAP per stargo
- Re-added legacy handling of DCC files

Change-Id: Ic0999a88691514746142937cbc4379d8d22ed60e
amazon-omap4-common: commonize domx/omap4 build settings

Change-Id: Iacf1c8eeadc6364b8269267b6c070d05244b6a23