saw-script: Fix ambiguous occurrence of unzip function

`base-4.19.0.0` (GHC 9.8) adds `unzip` to `Data.Functor`, which clashes with
the `unzip` function defined in `Data.List`. We resolve the ambiguity by using
explicit imports from `Data.Functor` to avoid importing `Data.Functor.unzip`.

src/SAWScript/Crucible/LLVM/FFI.hs

@@ -44,7 +44,7 @@ import           Control.Monad
 import           Control.Monad.Trans
 import           Data.Bits                            (finiteBitSize)
 import           Data.Foldable
-import           Data.Functor
+import           Data.Functor                         ((<&>))
 import           Data.List
 import           Data.List.NonEmpty                   (NonEmpty (..))
 import qualified Data.List.NonEmpty                   as NE