KVM: PPC: add CPU_FTR_EMB_HV to CPU table

e6500 support (commit 10241842,
"powerpc: Add initial e6500 cpu support" and the introduction of
CPU_FTR_EMB_HV (commit 73196cd3,
"KVM: PPC: e500mc support") collided during merge, leaving e6500's CPU
table entry missing CPU_FTR_EMB_HV.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>