Update the FSF address to their current location

The Free Software Foundation moved to "51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA" quite a while ago already. However, we still have some sources in QEMU that refer to their old location in Temple Place or Mass Ave instead. The address should be updated there (or maybe replaced with a pointer to http://www.gnu.org/licenses/ instead?) to avoid confusion.

List of files with wrong addresses:

hw/sh4/sh7750_regs.h
contrib/gitdm/filetypes.txt
hw/scsi/viosrp.h
include/qemu/uri.h
include/hw/arm/raspi_platform.h
tests/unit/rcutorture.c
tests/unit/test-rcu-list.c
tests/qemu-iotests/022
util/uri.c

While at it, we should consider to add proper SPDX license identifiers to these files, too.

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