MIPS: dump_tlb: Refactor TLB matching

Refactor the TLB matching code in dump_tlb() slightly so that the
conditions which can cause a TLB entry to be skipped can be more easily
extended. This should prevent the match condition getting unwieldy once
it is updated to take further conditions into account.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10081/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>