Settings[Wifi]: fix the input invalid length for WEP encryption.
Add following check for WEP password:
WEP40, WEP104, WEP128 -- 5, 13, 16
HEX -- 10, 26, 32, character&number only
Change-Id: Ia76583f23ed860fcce7ff80f7bc7a70579c1bb88
CRs-Fixed: 1115766
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