Fix -Wimplicit-const-int-float-conversion error. (#15982)

Summary:

as titled

Reviewed By: skrtskrtfb, zonglinpeng

Differential Revision: D87882617

Author: hsharma35

backends/cadence/vision/kernels/kernels.cpp

@@ -25,8 +25,8 @@ void* allocate_temp_memory(KernelRuntimeContext& ctx, size_t size) {
 // Quantize a fp32 value to an int8_t/uint8_t value
 template <typename T>
 T quantize(const float x, float scale, int32_t zero_point) {
-  constexpr float min_val = std::numeric_limits<T>::min();
-  constexpr float max_val = std::numeric_limits<T>::max();
+  constexpr float min_val = static_cast<float>(std::numeric_limits<T>::min());
+  constexpr float max_val = static_cast<float>(std::numeric_limits<T>::max());
   float tmp = roundf(x * scale + zero_point);
   return std::max(std::min(tmp, max_val), min_val);
 }