AVX512F exp implementation based on PERM2

PiperOrigin-RevId: 277100643
diff --git a/BUILD.bazel b/BUILD.bazel
index 57d4a01..7353044 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -430,6 +430,7 @@
     "src/math/exp-avx512f-p5-scalef.c",
     "src/math/exp-avx512f-p5.c",
     "src/math/exp-avx512f-perm-p3.c",
+    "src/math/exp-avx512f-perm2-p2.c",
     "src/math/extexp-avx512f-p5.c",
 ]