target-ppc: Fix CPU_POWERPC_MPC8547E

It was defined to ..._MPC8545E_v21 rather than ..._MPC8547E_v21.
Due to both resolving to CPU_POWERPC_e500v2_v21 this did not show.

Fixing this nontheless helps with QOM'ifying CPU aliases.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
(cherry picked from commit 0136d71)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

target-ppc/translate_init.c

@@ -7282,7 +7282,7 @@ enum {
 #define CPU_POWERPC_MPC8545E_v10     CPU_POWERPC_e500v2_v10
 #define CPU_POWERPC_MPC8545E_v20     CPU_POWERPC_e500v2_v20
 #define CPU_POWERPC_MPC8545E_v21     CPU_POWERPC_e500v2_v21
-#define CPU_POWERPC_MPC8547E         CPU_POWERPC_MPC8545E_v21
+#define CPU_POWERPC_MPC8547E         CPU_POWERPC_MPC8547E_v21
 #define CPU_POWERPC_MPC8547E_v10     CPU_POWERPC_e500v2_v10
 #define CPU_POWERPC_MPC8547E_v20     CPU_POWERPC_e500v2_v20
 #define CPU_POWERPC_MPC8547E_v21     CPU_POWERPC_e500v2_v21