feat(rh850): use all 4 cores in baremetal demo

Signed-off-by: David Cerdeira <davidmcerdeira@gmail.com>

Author: DavidMCerdeira

demos/baremetal/configs/rh850-u2a16.c

@@ -15,10 +15,10 @@ struct config config = {
         {
             .entry = 0x7F0000,
             .image = VM_IMAGE_LOADED(0x7F0000,0x7F0000,0x10000),
-            .cpu_affinity = 0x1,
+            .cpu_affinity = 0xf,
 
             .platform = {
-                .cpu_num = 2,
+                .cpu_num = 4,
                 .region_num = 2,
                 .regions =  (struct vm_mem_region[]) {
                     // Code Flash (Bank A) -> Guest code