gallium: replace PIPE_SHADER_CAP_INDIRECT_INPUT/OUTPUT_ADDR with NIR options

This is a prerequisite for enabling nir_opt_varyings for all gallium
drivers.

nir_lower_io_passes (called by the GLSL linker) only uses NIR options
to lower indirect IO access before lowering IO and calling
nir_opt_varyings.

Most drivers report full support for indirect IO and lower it themselves,
which prevents compaction of lowered indirectly accessed varyings because
nir_opt_varyings doesn't touch indirect varyings.

Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> (Rb for asahi)
Reviewed-by: Pavel Ondračka <pavel.ondracka@gmail.com> (for r300)
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32423>

src/nouveau/codegen/nv50_ir_from_nir.cpp

@@ -3676,6 +3676,17 @@ nvir_nir_shader_compiler_options(int chipset, uint8_t shader_type)
    op.discard_is_demote = true;
    op.has_ddx_intrinsics = true;
    op.scalarize_ddx = true;
+   op.support_indirect_inputs = (uint8_t)BITFIELD_MASK(MESA_SHADER_GEOMETRY + 1);
+   op.support_indirect_outputs = (uint8_t)BITFIELD_MASK(MESA_SHADER_GEOMETRY + 1);
+
+   /* HW doesn't support indirect addressing of fragment program inputs
+    * on Volta.  The binary driver generates a function to handle every
+    * possible indirection, and indirectly calls the function to handle
+    * this instead.
+    */
+   if (chipset < NVISA_GV100_CHIPSET)
+      op.support_indirect_outputs |= BITFIELD_BIT(MESA_SHADER_FRAGMENT);
+
    return op;
 }