target/i386/emulate: replace FSF postal address with licenses URL

Some of the LGPLv2.1 boiler-plate still contained the
obsolete "51 Franklin Street" postal address.

Replace it with the canonical GNU licenses URL recommended by the FSF:
https://www.gnu.org/licenses/

Signed-off-by: Sean Wei <me@sean.taipei>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20250613.qemu.patch.12@sean.taipei>
Signed-off-by: Thomas Huth <thuth@redhat.com>

target/i386/emulate/x86_emu.c

@@ -31,8 +31,8 @@
 //  Lesser General Public License for more details.
 //
 //  You should have received a copy of the GNU Lesser General Public
-//  License along with this library; if not, write to the Free Software
-//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
+//  License along with this library; if not, see
+//  <https://www.gnu.org/licenses/>.
 /////////////////////////////////////////////////////////////////////////
 
 #include "qemu/osdep.h"

target/i386/emulate/x86_flags.c

@@ -14,8 +14,8 @@
 //  Lesser General Public License for more details.
 //
 //  You should have received a copy of the GNU Lesser General Public
-//  License along with this library; if not, write to the Free Software
-//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
+//  License along with this library; if not, see
+//  <https://www.gnu.org/licenses/>.
 /////////////////////////////////////////////////////////////////////////
 /*
  * flags functions

target/i386/emulate/x86_flags.h

@@ -14,8 +14,8 @@
 //  Lesser General Public License for more details.
 //
 //  You should have received a copy of the GNU Lesser General Public
-//  License along with this library; if not, write to the Free Software
-//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
+//  License along with this library; if not, see
+//  <https://www.gnu.org/licenses/>.
 /////////////////////////////////////////////////////////////////////////
 /*
  * x86 eflags functions