bcmdhd_ds: adding legacy version of bcmdhd for doubleshot

Adding the original bcmdhd unpatched.
As of now HTC Doubleshot is having trouble with the
updated drivers, when wifi dropouts are happening
it gets stuck and until a module reload is done (off/on),
it cannot reconnect to any other wifi network.
Changing doubleshot defconfig accordingly.

Change-Id: I9b9ec6e65bd4554e290002d2116eed271eb782f0