Add util/crc32c_arm64.cc to TARGETS (#8168)

Summary:
When compiling RocksDB with Buck for ARM64, the linker complains about missing crc32 symbols that are defined in the crc32c_arm64.cc file. Since this file wasn't included in the build this is totally expected

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8168

Test Plan:
The following no longer fails to link rocksdb:
  buck build mode/mac-xcode //eden/fs/service:edenfs#macosx-arm64

Reviewed By: zhichao-cao

Differential Revision: D27664627

Pulled By: xavierd

fbshipit-source-id: fb9d7a538599ee7a08882f87628731de6e641f8d

TARGETS

@@ -340,6 +340,7 @@ cpp_library(
         "util/compression_context_cache.cc",
         "util/concurrent_task_limiter_impl.cc",
         "util/crc32c.cc",
+        "util/crc32c_arm64.cc",
         "util/dynamic_bloom.cc",
         "util/file_checksum_helper.cc",
         "util/hash.cc",
@@ -649,6 +650,7 @@ cpp_library(
         "util/compression_context_cache.cc",
         "util/concurrent_task_limiter_impl.cc",
         "util/crc32c.cc",
+        "util/crc32c_arm64.cc",
         "util/dynamic_bloom.cc",
         "util/file_checksum_helper.cc",
         "util/hash.cc",

src.mk

@@ -205,6 +205,7 @@ LIB_SOURCES =                                                   \
   util/compression_context_cache.cc                             \
   util/concurrent_task_limiter_impl.cc                          \
   util/crc32c.cc                                                \
+  util/crc32c_arm64.cc                                          \
   util/dynamic_bloom.cc                                         \
   util/hash.cc                                                  \
   util/murmurhash.cc                                            \
@@ -275,11 +276,6 @@ LIB_SOURCES =                                                   \
   utilities/write_batch_with_index/write_batch_with_index.cc    \
   utilities/write_batch_with_index/write_batch_with_index_internal.cc    \
 
-ifeq ($(ARMCRC_SOURCE),1)
-LIB_SOURCES +=\
-  util/crc32c_arm64.cc
-endif
-
 ifeq (,$(shell $(CXX) -fsyntax-only -maltivec -xc /dev/null 2>&1))
 LIB_SOURCES_ASM =\
   util/crc32c_ppc_asm.S