MFC r342811, r343168-r343169

r342811:
dtsec: Fix formatting of addresses in translation error messages

Don't clamp addresses to 8 hex digits, particularly since this is primarily
used now on a 64-bit platform.

r343168:
powerpc/dpaa: Handle DMAP virtual addresses in DPAA

sendfile(2) appears to now use DMAP wherever possible. These addresses are not
managed by pmap, so pmap_kextract() returns a 0 physical address, causing
failure.

This change fixes nginx running on P5020 SoC.

r343169:
dpaa: fix 32-bit build

Book-E powerpc uses 64-bit vm_paddr_t, and 32-bit powerpc has 32-bit pointers,
so gcc errors with cast to pointer from integer of different size. As this will
not actually be used in reality anyway, simply quiet the warning by casting
through uintptr_t.