DM Cx: add function to write Cx data to DSDT

The function would write CST objects which needed to enable Cx control
to UOS DSDT table.

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>

devicemodel/include/public/acrn_common.h

@@ -311,6 +311,15 @@ struct acrn_vm_pci_msix_remap {
  * @brief Info The power state data of a VCPU.
  *
  */
+
+#define SPACE_SYSTEM_MEMORY     0
+#define SPACE_SYSTEM_IO         1
+#define SPACE_PCI_CONFIG        2
+#define SPACE_Embedded_Control  3
+#define SPACE_SMBUS             4
+#define SPACE_PLATFORM_COMM     10
+#define SPACE_FFixedHW          0x7F
+
 struct acrn_register {
 	uint8_t 	space_id;
 	uint8_t 	bit_width;