nir/algebraic: Use "uint" instead of "unsigned" for uint types
nir/algebraic: Use "uint" instead of "unsigned" for uint types

This is consistent with the rename done for the rest of NIR.  Currently,
"bool" is the only type specifier used in nir_opt_algebraic.py so this is
really a no-op.

Reviewed-by: Samuel Iglesias Gonsálvez <b753b212f30aed827c3eea2e437609dc37310153@igalia.com>
Reviewed-by: Iago Toral Quiroga <a847aabaac44184372f6b1cd1a59aa254daaeb0b@igalia.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler