Update Eigen to commit:34780d8bd13d0af0cf17a22789ef286e8512594d

CHANGELOG
=========
34780d8bd - Include immintrin.h header for enscripten.
2cf4d18c9 - Disable AVX512 GEMM kernels by default.
a678a3e05 - Fix aligned_realloc to call check_that_malloc_is_allowed() if ptr == 0
4a5635940 - Add option to disable avx512 GEBP kernels
1092574b2 - Fix wrong doxygen group usage
e1165dbf9 - AutoDiff depends on Core, so include appropriate header.
bb51d9f4f - Fix ODR violations.
06a458a13 - Enable subtests which use device side malloc since this has been fixed in ROCm 5.2.
84cf3ff18 - Add pload_partial, pstore_partial (and unaligned versions), pgather_partial, pscatter_partial, loadPacketPartial and storePacketPartial.
c603275dc - Better performance for Power10 using more load and store vector pairs for GEMV

PiperOrigin-RevId: 464973344
Change-Id: Ida84f32c0ffb7c5cfddb2ca55ee5fbfb5267f729
16 files changed