Fixed function not found issue

[ROCm/hip commit: a1b608bf0d]

projects/hip/samples/2_Cookbook/11_texture_driver/tex2dKernel.cpp

@@ -23,7 +23,7 @@ THE SOFTWARE.
 #include "hip/hip_runtime.h"
 extern texture<float, 2, hipReadModeElementType> tex;
 
-__global__ void tex2dKernel(hipLaunchParm lp, float* outputData, int width, int height) {
+extern "C" __global__ void tex2dKernel(hipLaunchParm lp, float* outputData, int width, int height) {
     int x = hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x;
     int y = hipBlockIdx_y * hipBlockDim_y + hipThreadIdx_y;
     outputData[y * width + x] = tex2D(tex, x, y);