WAsm SIMD implementation of U8 MAXPOOL microkernel

PiperOrigin-RevId: 390958233
diff --git a/BUILD.bazel b/BUILD.bazel
index 303a980..5a8f845 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -1830,6 +1830,7 @@
     "src/qu8-vmul/gen/minmax-fp32-wasmsimd-mul32-ld64-x16.c",
     "src/qu8-vmulc/gen/minmax-fp32-wasmsimd-mul32-ld64-x8.c",
     "src/qu8-vmulc/gen/minmax-fp32-wasmsimd-mul32-ld64-x16.c",
+    "src/u8-maxpool/9p8x-minmax-wasmsimd-c16.c",
     "src/x32-packx/x4-wasmsimd.c",
     "src/x32-unpool/wasmsimd.c",
     "src/x32-zip/x2-wasmsimd.c",