OffloadUtilsTest - fix yoda conditions

Bernie says 3 <= fd is harder to read then fd >= 3, and I don't disagree.

Test: build, atest
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: If2c0c1fa4a533375ec990d969f3a932e381929aa
1 file changed