userfaultfd: replace lru_cache functions with folio_add functions

Replaces lru_cache_add() and lru_cache_add_inactive_or_unevictable() with
folio_add_lru() and folio_add_lru_vma().  This is in preparation for the
removal of lru_cache_add().

Link: https://lkml.kernel.org/r/20221101175326.13265-4-vishal.moola@gmail.com


Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>