Replace cpu_abort with hw_error

Signed-off-by: Paul Brook <paul@codesourcery.com>
diff --git a/hw/pxa2xx_keypad.c b/hw/pxa2xx_keypad.c
index 522c9c1..965fa35 100644
--- a/hw/pxa2xx_keypad.c
+++ b/hw/pxa2xx_keypad.c
@@ -209,8 +209,7 @@
         return s->kpkdi;
         break;
     default:
-        cpu_abort(cpu_single_env, "%s: Bad offset " REG_FMT "\n",
-                        __FUNCTION__, offset);
+        hw_error("%s: Bad offset " REG_FMT "\n", __FUNCTION__, offset);
     }
 
     return 0;
@@ -254,8 +253,7 @@
         break;
 
     default:
-        cpu_abort(cpu_single_env, "%s: Bad offset " REG_FMT "\n",
-                        __FUNCTION__, offset);
+        hw_error("%s: Bad offset " REG_FMT "\n", __FUNCTION__, offset);
     }
 }