Some machine changes of the day (January 1st, 2025)

1. Added the Award 430NX-based (Socket 5) ASUS P54NP4 with the right configuration.
2. Based on the pictures of the board, the IDE controller is not built-in in the ASUS P5MP3, but on a riser card, iirc, therefore, make IDE optional.

src/machine/m_at_socket4.c

@@ -126,7 +126,6 @@ machine_at_p5mp3_init(const machine_t *model)
         return ret;
 
     machine_at_common_init(model);
-    device_add(&ide_pci_device);
 
     pci_init(PCI_CONFIG_TYPE_2 | PCI_NO_IRQ_STEERING);
     pci_register_slot(0x00, PCI_CARD_NORTHBRIDGE, 0, 0, 0, 0);