staging: vt6656: Correct a few assignments to be compares in iwctl_siwencodeext()
The result of "foo = bar" is true, so in statements such as
...
if((pDevice->bwextstep0 = TRUE)&&(param->u.wpa_key.key_index ==1))
...
an assignment is most likely not what was intended - a comparison was. As in:
...
if ((pDevice->bwextstep0 == TRUE) && (param->u.wpa_key.key_index == 1))
...
There are a 3 such mistakes in the iwctl_siwencodeext() function.
This patch fixes them all.