fix conv1d stream hls directives

Author: Jonathan-Shoemaker

hls4ml/templates/vivado/nnet_utils/nnet_conv_stream.h

@@ -156,13 +156,13 @@ void kernel_shift_1d(
     typename data_T::value_type kernel_window[CONFIG_T::filt_width * CONFIG_T::n_chan]
 ) {
     #pragma HLS inline
-    #pragma HLS PIPELINE II = 1
 
     // Shift kernel_window by one step to the left (manual shift operation)
     static const int filt_width = CONFIG_T::filt_width - 1;
     KernelShiftWidth: for (int i_iw = 0; i_iw < filt_width; i_iw++) {
-        #pragma HLS UNROLL
+        #pragma HLS PIPELINE II = 1
         KernelShiftChannel: for (unsigned i_ic = 0; i_ic < CONFIG_T::n_chan; i_ic++) {
+            #pragma HLS UNROLL
             // Shift every element in kernel_window to the left
             kernel_window[i_iw * CONFIG_T::n_chan + i_ic] = kernel_window[(i_iw + 1) * CONFIG_T::n_chan + i_ic];
         }