vmm: Add tpm parameter

Add an optional --tpm parameter that takes UNIX Domain
Socket from swtpm.

Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>

vmm/src/api/openapi/cloud-hypervisor.yaml

@@ -573,6 +573,8 @@ components:
           default: false
         platform:
           $ref: "#/components/schemas/PlatformConfig"
+        tpm:
+          $ref: "#/components/schemas/TpmConfig"
       description: Virtual machine configuration
 
     CpuAffinity:
@@ -958,6 +960,14 @@ components:
         id:
           type: string
 
+    TpmConfig:
+      required:
+        - socket
+      type: object
+      properties:
+        socket:
+          type: string
+
     VdpaConfig:
       required:
         - path