Change t-cose integration to use PropertyCopy

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

Change-Id: I372fe908406c63104f833f2ec2dffb49bbe22b41
Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>
4 files changed