AVX Exp evaluation stub

PiperOrigin-RevId: 332794559
diff --git a/BUILD.bazel b/BUILD.bazel
index 48bd2b62..70bb15e 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -2222,6 +2222,7 @@
     "src/f32-vunary/gen/vneg-avx-x16.c",
     "src/f32-vunary/gen/vsqr-avx-x8.c",
     "src/f32-vunary/gen/vsqr-avx-x16.c",
+    "src/math/exp-avx-p5.c",
 ]
 
 XOP_UKERNELS = [