Add Micronics M5Pi.

This is a Socket 4 430LX machine using the Phoenix Ax86 BIOS.
Also adds a single channel version of the W83769F to support it's specific IDE setup.

src/machine/machine_table.c

@@ -9366,6 +9366,46 @@ const machine_t machines[] = {
         .snd_device = NULL,
         .net_device = NULL
     },
+    /* The M5Pi appears to have a Phoenix MultiKey KBC firmware according to photos. */	
+    {
+        .name = "[i430LX] Micronics M5Pi",
+        .internal_name = "m5pi",
+        .type = MACHINE_TYPE_SOCKET4,
+        .chipset = MACHINE_CHIPSET_INTEL_430LX,
+        .init = machine_at_m5pi_init,
+        .p1_handler = NULL,
+        .gpio_handler = NULL,
+        .available_flag = MACHINE_AVAILABLE,
+        .gpio_acpi_handler = NULL,
+        .cpu = {
+            .package = CPU_PKG_SOCKET4,
+            .block = CPU_BLOCK_NONE,
+            .min_bus = 60000000,
+            .max_bus = 66666667,
+            .min_voltage = 5000,
+            .max_voltage = 5000,
+            .min_multi = MACHINE_MULTIPLIER_FIXED,
+            .max_multi = MACHINE_MULTIPLIER_FIXED
+        },
+        .bus_flags = MACHINE_PCI,
+        .flags = MACHINE_IDE_DUAL | MACHINE_APM,
+        .ram = {
+            .min = 2048,
+            .max = 131072,
+            .step = 2048
+        },
+        .nvrmask = 127,
+        .kbc_device = NULL,
+        .kbc_p1 = 0xff,
+        .gpio = 0xffffffff,
+        .gpio_acpi = 0xffffffff,
+        .device = NULL,
+        .fdc_device = NULL,
+        .sio_device = NULL,
+        .vid_device = NULL,
+        .snd_device = NULL,
+        .net_device = NULL
+    },	
 
     /* OPTi 596/597 */
     /* This uses an AMI KBC firmware in PS/2 mode (it sends command A5 with the