!2684 GPU add mul support int

Merge pull request !2684 from VectorSL/mul

mindspore/ccsrc/kernel/gpu/math/broadcast_gpu_kernel.cc

@@ -96,5 +96,8 @@ MS_REG_GPU_KERNEL_TWO(
 MS_REG_GPU_KERNEL_TWO(
   Maximum, KernelAttr().AddInputAttr(kNumberTypeInt32).AddInputAttr(kNumberTypeInt32).AddOutputAttr(kNumberTypeInt32),
   BroadcastOpGpuKernel, int, int)
+MS_REG_GPU_KERNEL_TWO(
+  Mul, KernelAttr().AddInputAttr(kNumberTypeInt32).AddInputAttr(kNumberTypeInt32).AddOutputAttr(kNumberTypeInt32),
+  BroadcastOpGpuKernel, int, int)
 }  // namespace kernel
 }  // namespace mindspore