Revert of Move immintrin/arm_neon includes to where they are used.

include/core/SkTypes.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTypes_DEFINED
 #define SkTypes_DEFINED
 
 // IWYU pragma: begin_exports
 #include "SkPreConfig.h"
 #include "SkUserConfig.h"
 #include "SkPostConfig.h"
 #include <stddef.h>
 #include <stdint.h>
+
+#if defined(SK_ARM_HAS_NEON)
+    #include <arm_neon.h>
+#elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2
+    #include <immintrin.h>
+#endif
 // IWYU pragma: end_exports
 
 #include <string.h>
 
 /**
  *  sk_careful_memcpy() is just like memcpy(), but guards against undefined behavior.
  *
  * It is undefined behavior to call memcpy() with null dst or src, even if len is 0.
  * If an optimizer is "smart" enough, it can exploit this to do unexpected things.
  *     memcpy(dst, src, 0);
@@ skipping 672 matching lines @@
 
     void*       fPtr;
     size_t      fSize;  // can be larger than the requested size (see kReuse)
     uint32_t    fStorage[kSize >> 2];
 };
 // Can't guard the constructor because it's a template class.
 
 #endif /* C++ */
 
 #endif