f2fs: adjust kernel coding style

As pointed out by Randy Dunlap, this patch removes all usage of "/**" for comment
blocks. Instead, just use "/*".

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 94f13d2..aa4ef4f 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -1,4 +1,4 @@
-/**
+/*
  * fs/f2fs/inode.c
  *
  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
@@ -235,7 +235,7 @@
 	return 0;
 }
 
-/**
+/*
  * Called at the last iput() if i_nlink is zero
  */
 void f2fs_evict_inode(struct inode *inode)