[PATCH v2 22/28] binder: rename lru shrinker utilities

[Alice Ryhl]

> Now that the page allocation step is done separately we should rename
> the binder_free_page_range() and binder_allocate_page_range() functions
> to provide a more accurate description of what they do. Lets borrow the
> freelist concept used in other parts of the kernel for this.
> 
> No functional change here.
> 
> Signed-off-by: Carlos Llamas <cmllamas@xxxxxxxxxx>

Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>