f2fs: space related cleanup

Just for code style, no logic change
1. delete useless space
2. change spaces into tab

Signed-off-by: Jack Qiu <jack.qiu@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 5052440..88ed996 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -27,7 +27,7 @@ enum {
 	NM_INFO,	/* struct f2fs_nm_info */
 	F2FS_SBI,	/* struct f2fs_sb_info */
 #ifdef CONFIG_F2FS_STAT_FS
-	STAT_INFO,      /* struct f2fs_stat_info */
+	STAT_INFO,	/* struct f2fs_stat_info */
 #endif
 #ifdef CONFIG_F2FS_FAULT_INJECTION
 	FAULT_INFO_RATE,	/* struct f2fs_fault_info */
@@ -717,7 +717,7 @@ static struct kobj_type f2fs_ktype = {
 };
 
 static struct kset f2fs_kset = {
-	.kobj   = {.ktype = &f2fs_ktype},
+	.kobj	= {.ktype = &f2fs_ktype},
 };
 
 static struct kobj_type f2fs_feat_ktype = {