Add option to pass HCI options when creating a device

[michal-narajowski]

This can be useful when we need to use specific HCI device ID.

[michal-narajowski]

@moogle19 The Travis error is some issue with the script, I think. Could you review this patch?

[ccollins476ad]

The change looks good to me.

[moogle19]

@michal-narajowski
No, it's not a script issue. The problem is that hci.Options is not available for darwin and because of that, all darwin builds fail.
hci.Option is only available under linux, darwin uses device.Option.
I think the best way to use Option for both platforms would be an Interface (like we have for Client, Device, ...) which is implemented by hci and device.

[michal-narajowski]

@moogle19 Silly of me, I didn't notice the compilation error. Does it look better now?

[moogle19]

Looks good but I think examples/lib/dev/option is not the right directory for that.
Please put the option.go file into the root folder.

[michal-narajowski]

Changed as requested

[rymanluk]

I tested it and it looks good to me.

[rymanluk]

Are there any comments to resolve here or we can merge it?