imp dropout op kernel for gpu

src/operators/kernel/cl/mul_kernel.cpp

@@ -25,9 +25,7 @@ bool MulKernel<GPU_CL, float>::Init(MulParam<GPU_CL> *param) {
 }
 
 template <>
-void MulKernel<GPU_CL, float>::Compute(const MulParam<GPU_CL> &param) {
-
-}
+void MulKernel<GPU_CL, float>::Compute(const MulParam<GPU_CL> &param) {}
 
 template class MulKernel<GPU_CL, float>;
 

src/operators/mul_op.cpp

@@ -58,6 +58,9 @@ namespace ops = paddle_mobile::operators;
 #ifdef PADDLE_MOBILE_CPU
 REGISTER_OPERATOR_CPU(mul, ops::MulOp);
 #endif
+#ifdef PADDLE_MOBILE_CL
+REGISTER_OPERATOR_CL(mul, ops::MulOp);
+#endif
 #ifdef PADDLE_MOBILE_MALI_GPU
 REGISTER_OPERATOR_MALI_GPU(mul, ops::MulOp);
 #endif