enable kvm for ppc(32) on ppc64

ppc64 is backward compatible, likewise.
Signed-off-by: René Rebe <rene@exactcode.de>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

configure

@@ -3124,6 +3124,8 @@ case "$target_arch2" in
       \( "$target_arch2" = "$cpu" -o \
       \( "$target_arch2" = "ppcemb" -a "$cpu" = "ppc" \) -o \
       \( "$target_arch2" = "ppc64"  -a "$cpu" = "ppc" \) -o \
+      \( "$target_arch2" = "ppc"    -a "$cpu" = "ppc64" \) -o \
+      \( "$target_arch2" = "ppcemb" -a "$cpu" = "ppc64" \) -o \
       \( "$target_arch2" = "x86_64" -a "$cpu" = "i386"   \) -o \
       \( "$target_arch2" = "i386"   -a "$cpu" = "x86_64" \) \) ; then
       echo "CONFIG_KVM=y" >> $config_target_mak