anv,radv,turnip: Lower TG4 offsets with nir_lower_tex

v2: turn on for turnip as well (Karol Herbst)

Reviewed-by: Karol Herbst <kherbst@redhat.com>
diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
index bd045a0..a1612c8 100644
--- a/src/amd/vulkan/radv_shader.c
+++ b/src/amd/vulkan/radv_shader.c
@@ -313,6 +313,7 @@
 
 	static const nir_lower_tex_options tex_options = {
 	  .lower_txp = ~0,
+	  .lower_tg4_offsets = true,
 	};
 
 	nir_lower_tex(nir, &tex_options);