ub: uburma add cmd create jetty implementation.

driver inclusion
category: feature
bugzilla: NA
CVE: NA

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Uburma add implementations of handling create jetty cmd from
user layer.

This will make kernel possible to handle urma_create_jetty
api in user-layer urma.

Create jetty will finally call ubcore_create_jetty. The created jetty
will be related to a uobj.

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