hw/arm/npcm8xx_boards: Correct valid_cpu_types setting of NPCM8XX SoC

NPCM8XX SoC is the successor of the NPCM7XX. It features quad-core
Cortex-A35 (Armv8, 64-bit) CPUs and some additional peripherals.
Correct the `valid_cpu_types` setting to match the NPCM8XX SoC.

Cc: [email protected]
Fixes: 7e70eb3 ("hw/arm: Add NPCM845 Evaluation board")
Signed-off-by: Tim Lee <[email protected]>
Message-id: [email protected]
Reviewed-by: Peter Maydell <[email protected]>
Reviewed-by: Tyrone Ting <[email protected]>
Signed-off-by: Peter Maydell <[email protected]>
(cherry picked from commit 97cdd1b)
Signed-off-by: Michael Tokarev <[email protected]>

Author: timlee66

hw/arm/npcm8xx_boards.c

@@ -213,7 +213,7 @@ static void npcm8xx_machine_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
     static const char * const valid_cpu_types[] = {
-        ARM_CPU_TYPE_NAME("cortex-a9"),
+        ARM_CPU_TYPE_NAME("cortex-a35"),
         NULL
     };