Kinetis - Fix ctrl requests with data mult of 256
Kinetis - Fix ctrl requests with data mult of 256

To determine if a control request has a data stage the transfer size
is checked. This patch ensures both the low and high bytes of transfer
size are checked so transfers sizes using only the upper byte
(a multiple of 256) work.

google/DAPLink-port,sg-/DAPLink,sg-/DAPLink,google/DAPLink-port,sg-/DAPLink,google/DAPLink-port,google/DAPLink-port