Change qcbor integration to use PropertyCopy

Pass libc specific compilation settings to qcbor build using
PropertyCopy. This way not only system include and include paths are
handled but compilation flags and linker flags too.
This change makes qcbor build use the -nostdinc flag, which is
needed for proper newlib integration and was missing.

Change-Id: I6d678428120155c6c1bde068e0554f71e296bebe
Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>
7 files changed