btsock_signaled: provide debugging info for crash

Test: manual
Bug: 68108403
Change-Id: I89cfc15787f51594535e1e0c00e7a18a317a5d81
diff --git a/btif/src/btif_sock.cc b/btif/src/btif_sock.cc
index 90121b1..7deb29f 100644
--- a/btif/src/btif_sock.cc
+++ b/btif/src/btif_sock.cc
@@ -237,7 +237,8 @@
       btsock_l2cap_signaled(fd, flags, user_id);
       break;
     default:
-      CHECK(false && "Invalid socket type");
+      LOG(FATAL) << "Invalid socket type! type=" << type << " fd=" << fd
+                 << " flags=" << flags << " user_id=" << user_id;
       break;
   }
 }