target/hppa: Fill in hppa_cpu_do_interrupt/hppa_cpu_exec_interrupt

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/target/hppa/Makefile.objs b/target/hppa/Makefile.objs
index d892853..dcd60a6 100644
--- a/target/hppa/Makefile.objs
+++ b/target/hppa/Makefile.objs
@@ -1 +1,2 @@
 obj-y += translate.o helper.o cpu.o op_helper.o gdbstub.o mem_helper.o
+obj-y += int_helper.o