Roll src/third_party/libvpx/source/libvpx/ e47676c11..cd2ec5c3d (19 commits)

https://chromium.googlesource.com/webm/libvpx.git/+log/e47676c11cec..cd2ec5c3dfe5

$ git log e47676c11..cd2ec5c3d --date=short --no-merges --format='%ad %ae %s'
2023-04-11 cherma.rajan Add assert to ensure NEARESTMV or NEWMV modes are not skipped
2023-04-03 deepa.kg Avoid redundant start MV SAD calculation
2023-04-10 jzern vp9_quantize_avx2,highbd_get_max_lane_eob: fix mask
2023-04-06 jzern vp9_dx_iface: clear -Wshadow warnings
2023-04-06 jzern vp9_encoder: clear -Wshadow warning
2023-04-06 jzern vpx_subpixel_8t_intrin_avx2: clear -Wshadow warning
2023-04-06 jonathan.wright Optimize Armv8.0 Neon SAD4D 16xh, 32xh, and 64xh functions
2023-04-04 jonathan.wright Optimize 4D Neon reduction for 4xh and 8xh SAD4D blocks
2023-03-28 anupam.pandey Add AVX2 intrinsic for variance function for block width 8
2023-03-08 cherma.rajan Prune single ref modes based on mv difference and mode rate
2023-03-28 george.steed Avoid vshr and vget_{low,high} in Neon d135 predictor impl
2023-03-27 george.steed Use sum_neon.h helpers in Neon DC predictors
2023-03-27 salome.thirot Optimize Neon paths of high bitdepth SAD and SAD4d for 8xh blocks
2023-03-22 george.steed Avoid LD2/ST2 instructions in highbd v predictors in Neon
2023-03-22 george.steed Avoid interleaving loads/stores in Neon for highbd dc predictor
2023-03-21 george.steed Avoid LD2/ST2 instructions in vpx_dc_predictor_32x32_neon
2023-03-23 jzern svc_datarate_test: clear -Wshadow warning
2023-02-22 jzern vp9_mcomp.c: clear -Wshadow warnings
2023-02-22 jzern vp9_rc_get_second_pass_params: clear -Wshadow warning

Created with:
  roll-dep src/third_party/libvpx/source/libvpx

Bug: 1431729
Change-Id: Ib0c6b416b9a45d54ffb559ad47c372d1aae768d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4417019
Commit-Queue: James Zern <jzern@google.com>
Reviewed-by: Wan-Teh Chang <wtc@google.com>
Cr-Commit-Position: refs/heads/main@{#1129356}