lazy-tlb-shoot-lazies-a-non-refcounting-lazy-tlb-option-fix

lazy-tlb-shoot-lazies-a-non-refcounting-lazy-tlb-option-fix

Update the comment to be clearer, and account for the improvement
to MMU_LAZY_TLB_REFCOUNT comment.

Link: https://lkml.kernel.org/r/1623121901.mszkmmum0n.astroid@bobo.none
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Cc: Anton Blanchard <anton@ozlabs.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>