Add several missing includes in crc/internal

PiperOrigin-RevId: 615504707
Change-Id: Ia0e8211bd3c3d28fd0715c8f296ec50f6a700757

absl/crc/internal/crc_memcpy_fallback.cc

@@ -12,12 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include <cstdint>
+#include <cstring>
 #include <memory>
 
 #include "absl/base/config.h"
 #include "absl/crc/crc32c.h"
 #include "absl/crc/internal/crc_memcpy.h"
+#include "absl/strings/string_view.h"
 
 namespace absl {
 ABSL_NAMESPACE_BEGIN

absl/crc/internal/crc_non_temporal_memcpy.cc

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include <cstdint>
+#include <cstddef>
 
 #include "absl/base/config.h"
 #include "absl/crc/crc32c.h"