add-vmcore: cleanup the coding style according to Andrew's comments

[1/3] Cleanup the coding style according to Andrew's comments:
http://lists.infradead.org/pipermail/kexec/2007-August/000522.html
- vmcoreinfo_append_str() should have suitable __attribute__s so that
  the compiler can check its use.
- vmcoreinfo_max_size should have size_t.
- Use get_seconds() instead of xtime.tv_sec.
- Use init_uts_ns.name.release instead of UTS_RELEASE.

Signed-off-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kernel/ksysfs.c

@@ -66,7 +66,7 @@ static ssize_t vmcoreinfo_show(struct kset *kset, char *page)
 {
 	return sprintf(page, "%lx %x\n",
 		       paddr_vmcoreinfo_note(),
-		       vmcoreinfo_max_size);
+		       (unsigned int)vmcoreinfo_max_size);
 }
 KERNEL_ATTR_RO(vmcoreinfo);