ac/radeonsi: pass bindless bool to load_sampler_desc()

We also fix the base_index for bindless by using the driver
location.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/amd/common/ac_shader_abi.h

@@ -157,7 +157,8 @@ struct ac_shader_abi {
 					  unsigned constant_index,
 					  LLVMValueRef index,
 					  enum ac_descriptor_type desc_type,
-					  bool image, bool write);
+					  bool image, bool write,
+					  bool bindless);
 
 	/**
 	 * Load a Vulkan-specific resource.