FreeBSD/src cafceae (r350181)sys/powerpc/booke spe.c

powerpc/SPE: Enable SPV bit for EFSCFD instruction emulation

EFSCFD (floating point single convert from double) emulation requires saving
the high word of the register, which uses SPE instructions.  Enable the SPE
to avoid an SPV Unavailable exception.

MFC after:      1 week
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+1-0sys/powerpc/booke/spe.c
+1-01 files

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