security_flags.inc: disable -pie and -fpie from Python3 compilation.
If security_flags.inc is 'required' to the image, -pie and -fpie options
are added to CFLAGS. These are not compatible with -shared GCC option.
The result is several errors of following form and missing Python3
modules in the image:
*.o In function `_start': *.S undefined reference to `main'
collect2: error: ld returned 1 exit status
Signed-off-by: Topi Kuutela <topi.kuutela@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
