drm/i915: cleanup some indenting

Static checkers complain that we should probably add curly braces
because, from the indenting, it looks like seq_printf() should be inside
the list_for_each_entry() loop.  But the code is actually correct, it's
just the indenting which is off.

Besides fixing the indenting on seq_printf(), I did add curly braces,
because generally mult-line indents should have curly braces to make
them more readable.

The unintended indent was left behind and not unindented in

commit d7f46fc4
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date:   Fri Dec 6 14:10:55 2013 -0800

    drm/i915: Make pin count per VMA
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -139,9 +139,10 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 		   obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 	if (obj->base.name)
 		seq_printf(m, " (name: %d)", obj->base.name);
-	list_for_each_entry(vma, &obj->vma_list, vma_link)
+	list_for_each_entry(vma, &obj->vma_list, vma_link) {
 		if (vma->pin_count > 0)
 			pin_count++;
+	}
 	seq_printf(m, " (pinned x %d)", pin_count);
 	if (obj->pin_display)
 		seq_printf(m, " (display)");