qtnfmac: make encryption info a part of CONNECT command.

Encryption info is a constant part of STA settings, no point
to pass it as an optional TLV.
Remove QTN_TLV_ID_CRYPTO type as it's not used anymore.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>