powerpc/mm: Fix typo in comments

Fixes: 912cc87a6 "powerpc/mm/radix: Add LPID based tlb flush helpers"
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alexey Kardashevskiy 2018-02-01 16:07:25 +11:00 • committed by Michael Ellerman
commit b574df9488