Fix SPI panic with SpiDevice.Create(#3520)

Author: AdrianSoundy

src/System.Device.Spi/sys_dev_spi_native.cpp

@@ -52,6 +52,9 @@ static const CLR_RT_MethodHandler method_lookup[] =
     Library_sys_dev_spi_native_System_Device_Spi_SpiDevice::NativeInit___VOID,
     Library_sys_dev_spi_native_System_Device_Spi_SpiDevice::NativeOpenDevice___I4,
     nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
 };
 
 const CLR_RT_NativeAssemblyData g_CLR_AssemblyNative_System_Device_Spi =