icE1usb fw: Use helper functions to derive config value from struct

Just from this patch, it's not clear why this is better, but
it makes things a bit cleaner in upcoming patches

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I4c75bb4eb20c1d1aaa1695e95bdf0417bbf3bf76
1 file changed