[bazel][libc] Update Bazel rules for fmodbf16 math function that was added in 96b1dfb57fc822ea69bf75a8f0a69eb168776faa (#157143)

diff --git a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
index ee7e5cb..5df4394 100644
--- a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
@@ -3749,6 +3749,13 @@
 )
 
 libc_math_function(
+    name = "fmodbf16",
+    additional_deps = [
+        ":__support_fputil_generic_fmod",
+    ],
+)
+
+libc_math_function(
     name = "fmodf",
     additional_deps = [
         ":__support_fputil_generic_fmod",
diff --git a/utils/bazel/llvm-project-overlay/libc/test/src/math/smoke/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/test/src/math/smoke/BUILD.bazel
index 087c3a6..07d95fb 100644
--- a/utils/bazel/llvm-project-overlay/libc/test/src/math/smoke/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/libc/test/src/math/smoke/BUILD.bazel
@@ -739,6 +739,11 @@
 )
 
 math_test(
+    name = "fmodbf16",
+    hdrs = ["FModTest.h"],
+)
+
+math_test(
     name = "fmodf",
     hdrs = ["FModTest.h"],
 )