pvmfw: Apply VM DTBO

This CL only applies assigned VM DTBO for the simplest case, which
iommu, phandle, nor aliases aren't involved.

Next CLs will handle following cases:
  - Apply iommu. Platform DT will be also updated to have pre-populated
    pvmiommu node
  - Validate patched values (reg, iommu, ..)
  - Handle __local_fixup__, __fixups__ (i.e. handle phandle in VM DTBO)
  - Handle /alias in VM DTBO
  - ...

Bug: 277993056
Test: atest libpvmfw.device_assignment.test, launch protected VM
Change-Id: I4e4aea0885da925ae419921d729380a1d71707e0
diff --git a/pvmfw/TEST_MAPPING b/pvmfw/TEST_MAPPING
index d77e651..f21318e 100644
--- a/pvmfw/TEST_MAPPING
+++ b/pvmfw/TEST_MAPPING
@@ -7,6 +7,9 @@
     },
     {
       "name" : "libpvmfw.bootargs.test"
+    },
+    {
+      "name" : "libpvmfw.device_assignment.test"
     }
   ]
 }