Relates to https://reviews.llvm.org/D150427,
Each printf call populates buffer with following data
1. Control DWord - contains info regarding stream, format string constness and size of data frame
(see http://gerrit-git.amd.com/c/lightning/ec/device-libs/+/857722 for more info)
2. Hash of the format string (if constant) else the format string itself
3. Printf arguments (each aligned to 8 byte boundary)
Change-Id: I7e320deb343921b4b4cfaf08a2be2883e0bc1f65
Vikram
7b6a8f1702