message: enable network support if pci support is available
diff: #![allow(clippy::result_unit_err)]
  -#[cfg(all(not(feature = "newlib"), target_arch = "x86_64"))]
  +#[cfg(all(not(feature = "newlib"), feature = "pci", target_arch = "x86_64"))]
  use crate::drivers::net::*;
  use crate::environment;
  #[cfg(feature = "newlib")]
  @@ -152,13 +152,13 @@ pub fn sys_rx_buffer_consumed(handle: usize) -> Result<(), ()> {
  kernel_function!(__sys_rx_buffer_consumed(handle))
  }
  -#[cfg(all(not(feature = "newlib"), target_arch = "x86_64"))]
  +#[cfg(all(not(feature = "newlib"), feature = "pci", target_arch = "x86_64"))]
  #[no_mangle]
  pub extern "C" fn sys_netwait() {
  kernel_function!(netwait());
  }
  -#[cfg(all(not(feature = "newlib"), target_arch = "x86_64"))]
  +#[cfg(all(not(feature = "newlib"), feature = "pci", target_arch = "x86_64"))]
  #[no_mangle]
  pub extern "C" fn sys_set_network_polling_mode(value: bool) {
  kernel_function!(set_polling_mode(value));
  