Replace cpu_abort with hw_error

Signed-off-by: Paul Brook <paul@codesourcery.com>
diff --git a/hw/pl061.c b/hw/pl061.c
index fab99d4..71141ad 100644
--- a/hw/pl061.c
+++ b/hw/pl061.c
@@ -126,8 +126,7 @@
     case 0x524: /* Commit */
         return s->cr;
     default:
-        cpu_abort (cpu_single_env, "pl061_read: Bad offset %x\n",
-                   (int)offset);
+        hw_error("pl061_read: Bad offset %x\n", (int)offset);
         return 0;
     }
 }
@@ -199,8 +198,7 @@
             s->cr = value;
         break;
     default:
-        cpu_abort (cpu_single_env, "pl061_write: Bad offset %x\n",
-                   (int)offset);
+        hw_error("pl061_write: Bad offset %x\n", (int)offset);
     }
     pl061_update(s);
 }