btrfs-progs: add CHANGING_FSID_V2 to print-tree

Add the DEF_SUPER_FLAG_ENTRY for CHANGING_FSID_V2 to our btrfs-progs'
print-tree.c, as it is currently missing in the dump-super output, which
was too confusing.

Before:
flags			0x1000000001
			( WRITTEN )

After:
flags			0x1000000001
			( WRITTEN |
			  CHANGING_FSID_V2 )

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

Author: asj

kernel-shared/print-tree.c

@@ -1721,6 +1721,7 @@ static struct readable_flag_entry super_flags_array[] = {
 	DEF_HEADER_FLAG_ENTRY(WRITTEN),
 	DEF_HEADER_FLAG_ENTRY(RELOC),
 	DEF_SUPER_FLAG_ENTRY(CHANGING_FSID),
+	DEF_SUPER_FLAG_ENTRY(CHANGING_FSID_V2),
 	DEF_SUPER_FLAG_ENTRY(SEEDING),
 	DEF_SUPER_FLAG_ENTRY(METADUMP),
 	DEF_SUPER_FLAG_ENTRY(METADUMP_V2)
@@ -1730,6 +1731,7 @@ static const int super_flags_num = ARRAY_SIZE(super_flags_array);
 #define BTRFS_SUPER_FLAG_SUPP	(BTRFS_HEADER_FLAG_WRITTEN |\
 				 BTRFS_HEADER_FLAG_RELOC |\
 				 BTRFS_SUPER_FLAG_CHANGING_FSID |\
+				 BTRFS_SUPER_FLAG_CHANGING_FSID_V2 |\
 				 BTRFS_SUPER_FLAG_SEEDING |\
 				 BTRFS_SUPER_FLAG_METADUMP |\
 				 BTRFS_SUPER_FLAG_METADUMP_V2)