Refactor the warning flags
Refactor the warning flags

This patch keeps the same warnings, and simply reorders them to keep all
the warning options together in one place.

Change-Id: Ibb655dcabc84f3af01a0d7f71f5af7e0479c2521
Signed-off-by: Justin Chadwell <23868ac6bb803cbca62577fbb15c1a832c6e5215@arm.com>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware