btrfs/023: skip trying to test raid56 without kernel support

Older kernels don't support raid56.  This test is still valid for
other profiles, so skip raid56 if the kernel doesn't support it.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
1 file changed