fix a bug in ewadd in FPGA v2, test=mobile

mobile/src/fpga/V2/pe.cpp

@@ -534,7 +534,8 @@ uint64_t bypass_interrupt = reg_readq(REG_INTERRUPT);
           (((uint64_t)args.image0.height * 2) << 32);
   uint64_t image_row_col_padding_down = image_amount_per_row |
           (image_amount_per_row << 32);
-  float  quantParam = (args.output.scale_address)[0];
+  float  quantParam =
+          ((args.image0.scale_address)[0]) / ((args.output.scale_address)[0]);
   uint32_t* ew_scale = reinterpret_cast<uint32_t*>(&quantParam);
   uint64_t ew_scale_mult_factor = (*ew_scale) |
           ((uint64_t)args.const0 << 32) | ((uint64_t)args.const1 << 40);

mobile/src/operators/kernel/fpga/V2/elementwise_add_kernel.cpp

@@ -33,8 +33,8 @@ bool ElementwiseAddKernel<FPGA, float>::Init(ElementwiseAddParam<FPGA> *param) {
   float C1 = Si_1 / So;
   float C2 = Si_2 / So;
   fpga::EWAddArgs ewaddArgs = {0};
-  ewaddArgs.const0 = fpga::fp32_2_fp16(C1);
-  ewaddArgs.const1 = fpga::fp32_2_fp16(C2);
+  ewaddArgs.const0 = 1;
+  ewaddArgs.const1 = 1;
   ewaddArgs.relu_enabled = 0;
   ewaddArgs.image0.address = input_x_ptr;
   ewaddArgs.image0.channels = (uint32_t)input_x->dims()[1];

mobile/src/operators/kernel/fpga/V2/elementwise_add_relu_kernel.cpp

@@ -35,8 +35,8 @@ bool ElementwiseAddReluKernel<FPGA, float>::Init(
   float C2 = Si_2 / So;
   fpga::EWAddArgs ewaddArgs = {0};
   ewaddArgs.relu_enabled = 1;
-  ewaddArgs.const0 = fpga::fp32_2_fp16(C1);
-  ewaddArgs.const1 = fpga::fp32_2_fp16(C2);
+  ewaddArgs.const0 = 1;
+  ewaddArgs.const1 = 1;
   ewaddArgs.image0.address = input_x_ptr;
   ewaddArgs.image0.channels = (uint32_t)input_x->dims()[1];
   ewaddArgs.image0.scale_address = input_x->scale;