qcacmn: Add unit test for uint16 array parsing

Change Idbde9d70c64bc131813f5789c0453c9b3736228b has added
a logic to parse a string to uint16 array, there is no test
case written for this in unit test case infrastructure.

Add a unit test case to verify the logic written with the change
Idbde9d70c64bc131813f5789c0453c9b3736228b.

Change-Id: I38d6a0d6003807de7f5ec654926bd75da8b0996c
CRs-fixed: 2478274
1 file changed