debugger.cpp should know the names of the signals it catches.

Change-Id: I37908b07739ad465652f143848c52bc1ef19e421
diff --git a/linker/debugger.cpp b/linker/debugger.cpp
index 521a599..75929ac 100644
--- a/linker/debugger.cpp
+++ b/linker/debugger.cpp
@@ -121,10 +121,6 @@
   const char* signal_name = "???";
   bool has_address = false;
   switch (signum) {
-    case SIGILL:
-      signal_name = "SIGILL";
-      has_address = true;
-      break;
     case SIGABRT:
       signal_name = "SIGABRT";
       break;
@@ -136,6 +132,13 @@
       signal_name = "SIGFPE";
       has_address = true;
       break;
+    case SIGILL:
+      signal_name = "SIGILL";
+      has_address = true;
+      break;
+    case SIGPIPE:
+      signal_name = "SIGPIPE";
+      break;
     case SIGSEGV:
       signal_name = "SIGSEGV";
       has_address = true;
@@ -145,8 +148,8 @@
       signal_name = "SIGSTKFLT";
       break;
 #endif
-    case SIGPIPE:
-      signal_name = "SIGPIPE";
+    case SIGTRAP:
+      signal_name = "SIGTRAP";
       break;
   }