[PATCH] erofs-utils: fix old kernel compatibility for non-lz4 compression

[Li Guifu]

> If primary algorithm is not lz4 (e.g. compression
> off), clear EROFS_FEATURE_INCOMPAT_LZ4_0PADDING
> for old kernel (upstream kernel <= 5.2.y) compatibility.
> 
> Signed-off-by: Gao Xiang <gaoxiang25 at huawei.com>
> ---

Reviewed-by: Li Guifu <blucerlee at gmail.com>

Thanks,