icE1usb fw: Don't prefill feedback

This prevents inlining of the code, and is completely
unecessary.

 (1) It will be filled a bit later
 (2) We don't have any meaningful feedback to provide anyway

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I6e97bc79d1fe50950bb1f7cd71d8c428e928d4ae
1 file changed