[release/2.7] Added missing MI350_ARCH constant value (#2519)

Fixes test/distributed/tensor/test_matrix_ops.py by defining missing
constant value

Author: albmalamd

torch/testing/_internal/common_utils.py

@@ -104,6 +104,7 @@
 
 
 MI300_ARCH = ("gfx940", "gfx941", "gfx942")
+MI350_ARCH = ("gfx950")
 NAVI_ARCH = ("gfx1030", "gfx1100", "gfx1101", "gfx1200", "gfx1201")
 NAVI3_ARCH = ("gfx1100", "gfx1101")
 NAVI4_ARCH = ("gfx1200", "gfx1201")