radv: Fix warning in 32-bit build.

uintptr_t is 32 bits in a 32-bits build, resulting in shifting out
of bounds.

Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

src/amd/vulkan/radv_cmd_buffer.c

@@ -556,8 +556,9 @@ radv_save_pipeline(struct radv_cmd_buffer *cmd_buffer,
 		assert(!"invalid ring type");
 	}
 
-	data[0] = (uintptr_t)pipeline;
-	data[1] = (uintptr_t)pipeline >> 32;
+	uint64_t pipeline_address = (uintptr_t)pipeline;
+	data[0] = pipeline_address;
+	data[1] = pipeline_address >> 32;
 
 	radv_emit_write_data_packet(cmd_buffer, va, 2, data);
 }