dm: virtio: fix compile issue on ubuntu

As VIRTIO_CONFIG_S_NEEDS_RESET is not defined in standard virtio header
file on ubuntu, there will be compile issue. so add
VIRTIO_CONFIG_S_NEEDS_RESET to fix it.

Tracked-On: #2145
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Reviewed-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>

Author: conghuic23

devicemodel/include/virtio.h

@@ -229,6 +229,14 @@ enum {
 #define	VIRTIO_DEV_HDCP		0x8607
 #define	VIRTIO_DEV_COREU	0x8608
 
+/*
+ * VIRTIO_CONFIG_S_NEEDS_RESET is not defined
+ * in some environments's virtio_config.h
+ */
+#ifndef VIRTIO_CONFIG_S_NEEDS_RESET
+#define VIRTIO_CONFIG_S_NEEDS_RESET	0x40
+#endif
+
 /*
  * Bits in VIRTIO_PCI_ISR.  These apply only if not using MSI-X.
  *