Update Eigen to commit:4c38131a16803130b66266a912029504f2cf23cd

CHANGELOG
=========
4c38131a1 - Fix android hardware_destructive_inference_size issue.

PiperOrigin-RevId: 724069969
Change-Id: I0e8b46df0be1c65d24129440d7e8ae5c68796d6d

Eigen/src/Core/util/ConfigureVectorization.h

diff --git a/Eigen/src/Core/util/ConfigureVectorization.h b/Eigen/src/Core/util/ConfigureVectorization.h
index 62297a2..5d3f1cf 100644
--- a/Eigen/src/Core/util/ConfigureVectorization.h
+++ b/Eigen/src/Core/util/ConfigureVectorization.h
@@ -39,8 +39,11 @@
 #endif
 
 // Align to the boundary that avoids false sharing.
-// https://en.cppreference.com/w/cpp/thread/hardware_destructive_interference_size
-#if defined(__cpp_lib_hardware_interference_size) && __cpp_lib_hardware_interference_size >= 201603
+//   https://en.cppreference.com/w/cpp/thread/hardware_destructive_interference_size
+// There is a bug in android NDK < r26 where the macro is defined but std::hardware_destructive_interference_size
+// still does not exist.
+#if defined(__cpp_lib_hardware_interference_size) && __cpp_lib_hardware_interference_size >= 201603 && \
+    (!EIGEN_OS_ANDROID || __NDK_MAJOR__ + 0 >= 26)
 #include <new>
 #define EIGEN_ALIGN_TO_AVOID_FALSE_SHARING EIGEN_ALIGN_TO_BOUNDARY(std::hardware_destructive_interference_size)
 #else

Eigen/src/Core/util/Macros.h

diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h
index f3a1d9c..7347dbb 100644
--- a/Eigen/src/Core/util/Macros.h
+++ b/Eigen/src/Core/util/Macros.h
@@ -430,6 +430,16 @@
 // note: ANDROID is defined when using ndk_build, __ANDROID__ is defined when using a standalone toolchain.
 #if defined(__ANDROID__) || defined(ANDROID)
 #define EIGEN_OS_ANDROID 1
+
+// Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in
+// <android/ndk-version.h>. For NDK < r16, users should define these macros,
+// e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11.
+#if defined __has_include
+#if __has_include(<android/ndk-version.h>)
+#include <android/ndk-version.h>
+#endif
+#endif
+
 #else
 #define EIGEN_OS_ANDROID 0
 #endif

Eigen/src/ThreadPool/ThreadLocal.h

diff --git a/Eigen/src/ThreadPool/ThreadLocal.h b/Eigen/src/ThreadPool/ThreadLocal.h
index 71df401..aa0bd10 100644
--- a/Eigen/src/ThreadPool/ThreadLocal.h
+++ b/Eigen/src/ThreadPool/ThreadLocal.h
@@ -43,12 +43,7 @@
 // This is primarily because of linker problems and toolchain misconfiguration:
 // TLS isn't supported until NDK r12b per
 // https://developer.android.com/ndk/downloads/revision_history.html
-// Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in
-// <android/ndk-version.h>. For NDK < r16, users should define these macros,
-// e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11.
-#if __has_include(<android/ndk-version.h>)
-#include <android/ndk-version.h>
-#endif  // __has_include(<android/ndk-version.h>)
+
 #if defined(__ANDROID__) && defined(__clang__) && defined(__NDK_MAJOR__) && defined(__NDK_MINOR__) && \
     ((__NDK_MAJOR__ < 12) || ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1)))
 #undef EIGEN_THREAD_LOCAL