nir_intrinsics.c existed as a static file until commit
76dfed8ae2d5 began
generating it as part of the build process. autotools is incapable of
coping, and so a build-tree from before this commit would then fail with
it:
[4]: *** No rule to make target '../../../mesa/src/compiler/nir/nir_intrinsics.c', needed by 'nir/nir_intrinsics.lo'. Stop.
Add a few lines to configure.ac to update the broken build files.
Fixes: 76dfed8ae2d5 ("nir: mako all the intrinsics")
rm -f src/compiler/spirv/spirv_info.lo
echo "# dummy" > src/compiler/spirv/.deps/spirv_info.Plo
+rm -f src/compiler/nir/.deps/nir_intrinsics.Plo
+echo "# dummy" > src/compiler/nir/.deps/nir_intrinsics.Plo
+
dnl
dnl Output some configuration info for the user
dnl