[llvm] [mlir] Update CODEOWNERS after x86 dialects refactoring (PR #194388)

[Adam Siemieniuk via llvm-commits]

https://github.com/adam-smnk created https://github.com/llvm/llvm-project/pull/194388

The two separate x86 dialects ('amx' and 'x86vector') have been merged into a single 'x86' dialect.
Relevent paths are updated accordingly.

>From ba3b3b6424d591f89bba0da7d3760b51a18022db Mon Sep 17 00:00:00 2001
From: Adam Siemieniuk <adam.siemieniuk at intel.com>
Date: Mon, 27 Apr 2026 16:11:48 +0200
Subject: [PATCH] [mlir] Update CODEOWNERS after x86 dialects refactoring

The two separate x86 dialects ('amx' and 'x86vector') have been merged
into a single 'x86' dialect.
Relevent paths are updated accordingly.
---
 .github/CODEOWNERS | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 85e9ae6350d59..d2014dc9bd89e 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -107,14 +107,13 @@
 /mlir/lib/Dialect/MemRef/Transforms/EmulateNarrowType.cpp @MaheshRavishankar @nicolasvasilache
 
 # Vector Dialect in MLIR.
-/mlir/**/*AMX* @aartbik @dcaballe
 /mlir/**/*Neon* @banach-space @dcaballe @nicolasvasilache
 /mlir/**/*SME* @banach-space @dcaballe @nicolasvasilache
 /mlir/**/*SVE* @banach-space @dcaballe @nicolasvasilache
 /mlir/**/*VectorInterfaces* @dcaballe @nicolasvasilache
 /mlir/**/*VectorToSCF* @banach-space @dcaballe @matthias-springer @nicolasvasilache
 /mlir/**/*VectorToLLVM* @banach-space @dcaballe @nicolasvasilache
-/mlir/**/*X86Vector* @aartbik @dcaballe @nicolasvasilache
+/mlir/**/*X86* @aartbik @dcaballe @nicolasvasilache
 /mlir/include/mlir/Dialect/Vector @banach-space @dcaballe @nicolasvasilache @Groverkss
 /mlir/include/mlir/Dialect/Vector/IR @kuhar
 /mlir/lib/Dialect/Vector @banach-space @dcaballe @nicolasvasilache @Groverkss