ub: ubcore add query/modify/flush jfs api impls

driver inclusion
category: feature
bugzilla: NA
CVE: NA

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Ubcore add query/modify/flush jfs, which will finally call hw driver's
registered method to query/modify/flush jfs.

ubcore_query_jfs: query jfs from ubcore device.
ubcore_modify_jfs: modify jfs attr from ubcore device.
ubcore_flush_jfs: return the wrs in JFS that is not consumed to
the application through cr.

Signed-off-by: Guoxin Qian <qianguoxin@huawei.com>
Signed-off-by: Yizhen Fan <fanyizhen@huawei.com>