[libc][obvious] Fix undefined variable after name change

[jhuber6]

Summary

I forgot that we still used these variables in the loaders.

libc/startup/gpu/amdgpu/start.cpp

 }
 
 } // namespace __llvm_libc
 
 extern "C" [[gnu::visibility("protected"), clang::amdgpu_kernel]] void
 _begin(int argc, char **argv, char **env, void *rpc_shared_buffer) {
   // We need to set up the RPC client first in case any of the constructors
   // require it.
-  __llvm_libc::rpc::client.reset(__llvm_libc::rpc::default_port_count,
+  __llvm_libc::rpc::client.reset(__llvm_libc::rpc::DEFAULT_PORT_COUNT,
                                  __llvm_libc::gpu::get_lane_size(),
                                  rpc_shared_buffer);
 
   // We want the fini array callbacks to be run after other atexit
   // callbacks are run. So, we register them before running the init
   // array callbacks as they can potentially register their own atexit
   // callbacks.
   __llvm_libc::atexit(&__llvm_libc::call_fini_array_callbacks);

libc/startup/gpu/nvptx/start.cpp

 }
 
 } // namespace __llvm_libc
 
 extern "C" [[gnu::visibility("protected"), clang::nvptx_kernel]] void
 _begin(int argc, char **argv, char **env, void *rpc_shared_buffer) {
   // We need to set up the RPC client first in case any of the constructors
   // require it.
-  __llvm_libc::rpc::client.reset(__llvm_libc::rpc::default_port_count,
+  __llvm_libc::rpc::client.reset(__llvm_libc::rpc::DEFAULT_PORT_COUNT,
                                  __llvm_libc::gpu::get_lane_size(),
                                  rpc_shared_buffer);
 
   // We want the fini array callbacks to be run after other atexit
   // callbacks are run. So, we register them before running the init
   // array callbacks as they can potentially register their own atexit
   // callbacks.
   __llvm_libc::atexit(&__llvm_libc::call_fini_array_callbacks);

libc/utils/gpu/loader/amdgpu/Loader.cpp

int load(int argc, char **argv, char **envp, void *image, size_t size,
   void *dev_ret;
   if (hsa_status_t err =
           hsa_amd_memory_pool_allocate(coarsegrained_pool, sizeof(int),
                                        /*flags=*/0, &dev_ret))
     handle_error(err);
   hsa_amd_memory_fill(dev_ret, 0, sizeof(int));
 
   // Allocate finegrained memory for the RPC server and client to share.
-  uint64_t port_size = __llvm_libc::rpc::default_port_count;
+  uint64_t port_size = __llvm_libc::rpc::DEFAULT_PORT_COUNT;
   uint32_t wavefront_size = 0;
   if (hsa_status_t err = hsa_agent_get_info(
           dev_agent, HSA_AGENT_INFO_WAVEFRONT_SIZE, &wavefront_size))
     handle_error(err);
 
   uint64_t rpc_shared_buffer_size =
       __llvm_libc::rpc::Server::allocation_size(port_size, wavefront_size);
   void *rpc_shared_buffer;

libc/utils/gpu/loader/nvptx/Loader.cpp

int load(int argc, char **argv, char **envp, void *image, size_t size,
 
   // Allocate space for the return pointer and initialize it to zero.
   CUdeviceptr dev_ret;
   if (CUresult err = cuMemAlloc(&dev_ret, sizeof(int)))
     handle_error(err);
   if (CUresult err = cuMemsetD32(dev_ret, 0, 1))
     handle_error(err);
 
-  uint64_t port_size = __llvm_libc::rpc::default_port_count;
+  uint64_t port_size = __llvm_libc::rpc::DEFAULT_PORT_COUNT;
   uint32_t warp_size = 32;
 
   uint64_t rpc_shared_buffer_size =
       __llvm_libc::rpc::Server::allocation_size(port_size, warp_size);
   void *rpc_shared_buffer = allocator(rpc_shared_buffer_size);
 
   if (!rpc_shared_buffer)
     handle_error("Failed to allocate memory the RPC client / server.");