ub: uburma add poll and release file ops impls for jfce and jfae event.

driver inclusion
category: feature
bugzilla: NA
CVE: NA

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Uburma add poll and release file ops impls for jfce and jfae event.

poll ops: finally will use poll_wait to poll.
release ops: finally will close fd, uninit event list, and release uobj.

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