Revert "[libc] Make GPU libm use generic implementations" (llvm#98061)

Reverts llvm#98014

buildbot is broken.

Author: joker-eph

libc/include/llvm-libc-macros/math-macros.h

@@ -41,10 +41,12 @@
 #define FP_LLOGBNAN LONG_MAX
 #endif
 
-#if defined(__NVPTX__) || defined(__AMDGPU__) || defined(__FAST_MATH__)
+#ifdef __FAST_MATH__
 #define math_errhandling 0
 #elif defined(__NO_MATH_ERRNO__)
 #define math_errhandling (MATH_ERREXCEPT)
+#elif defined(__NVPTX__) || defined(__AMDGPU__)
+#define math_errhandling (MATH_ERRNO)
 #else
 #define math_errhandling (MATH_ERRNO | MATH_ERREXCEPT)
 #endif