Documentation: accel: amdxdna: Update compiler information

The compiler information is outdated. Update it to the latest.

Reviewed-by: Maciej Falkowski <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Lizhi Hou <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/accel/amdxdna/amdnpu.rst

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 Compiler
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-Peano is an LLVM based open-source compiler for AMD XDNA Array compute tile
-available at:
+Peano is an LLVM based open-source single core compiler for AMD XDNA Array
+compute tile. Peano is available at:
 https://github.com/Xilinx/llvm-aie
 
-The open-source IREE compiler supports graph compilation of ML models for AMD
-NPU and uses Peano underneath. It is available at:
-https://github.com/nod-ai/iree-amd-aie
+IRON is an open-source array compiler for AMD XDNA Array based NPU which uses
+Peano underneath. IRON is available at:
+https://github.com/Xilinx/mlir-aie
 
 Usermode Driver (UMD)
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