fpga: Update SPI_CONFIG_IO pins to Hi-Z

Change-Id: I881631f4d4f3e74a214ad0977364074bc14a01d9
Reviewed-on: https://pigweed-review.googlesource.com/c/gonk/+/185890
Commit-Queue: Umang Shah <umangshah@google.com>
Reviewed-by: Anthony DiGirolamo <tonymd@google.com>

fpga/gonk/top.pcf

diff --git a/fpga/gonk/top.pcf b/fpga/gonk/top.pcf
index 40a43c3..20d0727 100644
--- a/fpga/gonk/top.pcf
+++ b/fpga/gonk/top.pcf
@@ -14,6 +14,8 @@
 
 ###IOSet List 63
 set_io led 56
+set_io ice_prog_spi_io0 67
+set_io ice_prog_spi_io1 68
 set_io rst_i 135
 set_io data_valid_o 136
 set_io op_mode_i 137

fpga/gonk/top.v

diff --git a/fpga/gonk/top.v b/fpga/gonk/top.v
index e1773ec..48b369b 100644
--- a/fpga/gonk/top.v
+++ b/fpga/gonk/top.v
@@ -22,6 +22,9 @@
     input  op_mode_i,
     output data_valid_o,
     output led,
+    input ice_prog_spi_io0,
+    input ice_prog_spi_io1,
+
     // spi secondary interface
     input  sl_sclk_i_0,
     input  sl_mosi_i_0,
@@ -105,6 +108,9 @@
   wire [23:0] vbus_7 ,vshunt_7,vbus_8 ,vshunt_8 ,vbus_9 ,vshunt_9 ,vbus_10 ,vshunt_10 ,vbus_11 ,vshunt_11;
   wire [39:0] rdata_w;
 
+  //assign ice_prog_spi_io0 = 1'bz; assigned as input. same as output hi-z.
+  //assign ice_prog_spi_io1 = 1'bz;
+
   pll pll_inst (
       .clock_in (clk_i),
       .clock_out(mclk)