hv: add vuart for VM2 in hybrid scenario

Add vuart COM1:
	port base: 0x3F8
	irq: 4
for LaaG (VM2) in hybird scenario.

Tracked-On: #3370
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/scenarios/hybrid/vm_configurations.c

@@ -79,7 +79,8 @@ struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {
 			/* d2795438-25d6-11e8-864e-cb7a18b34643 */
 		.vuart[0] = {
 			.type = VUART_LEGACY_PIO,
-			.addr.port_base = INVALID_COM_BASE,
+			.addr.port_base = COM1_BASE,
+			.irq = COM1_IRQ,
 		},
 		.vuart[1] = {
 			.type = VUART_LEGACY_PIO,