Change nanopb integration to use PropertyCopy

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

Change-Id: I9218a4261cee8acbb1d1e7076616f344edb5a272
Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>
4 files changed