PC-BSD/trueos 4dc9dadsys/powerpc/aim mmu_oea64.c

powerpc: Fix moea64 pmap from 347952

vm_paddr_t is only 32 bits on AIM32 (currently), causing a build failure with
the shifting.

MFC after:      2 weeks
MFC with:       r347952
DeltaFile
+4-0sys/powerpc/aim/mmu_oea64.c
+4-01 files

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