net: fix sparc64 compilation of sock_gettstamp

net/core/sock.c: In function 'sock_gettstamp':
net/core/sock.c:3007:23: error: expected '}' before ';' token
    .tv_sec = ts.tv_sec;
                       ^
net/core/sock.c:3011:4: error: expected ')' before 'return'
    return -EFAULT;
    ^~~~~~
net/core/sock.c:3013:2: error: expected expression before '}' token
  }
  ^

Fixes: c7cbdbf2

 ("net: rework SIOCGSTAMP ioctl handling")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>