openssl: add fips support

openssl: add fips support

* Add PACKAGECONFIG[fips] to enable fips build.
* Split a new package openssl-ossl-module-fips for fips.so.
* Add pkg_postinst_ontarget for openssl-ossl-module-fips to ensure the
  config file fipsmodule.cnf is created on target. This is because we
  should not use the same fipsmodule.cnf on different machines.
  The 'openssl fipsinstall' commandline in pkg_postinst_ontarget will do
  the following things:
  1. Run the FIPS module self tests on target.
  2. Generate config file fipsmodule.conf containing information about
     the FIPS module such as the calculated MAC of the module.

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>