acpi: remerge uacpi as inhouse

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

libs/uacpi/tests/test-cases/copy-a-method.asl

@@ -0,0 +1,34 @@
+// Name: Copy a local method and execute it
+// Expect: int => 3735928559
+
+DefinitionBlock ("x.aml", "DSDT", 2, "uTEST", "TESTTABL", 0xF0F0F0F0)
+{
+    Name (TEST, "Hello world!")
+
+    Method (GETX) {
+        Return (1)
+    }
+
+    Method (COPY) {
+        Method (GETX, 1, Serialized) {
+            Name (Y, 0xDEAD0000)
+            Y += Arg0
+            Return (Y)
+        }
+
+        Return (RefOf(GETX))
+    }
+
+    Method (COP1) {
+        Local0 = COPY()
+        Return (DerefOf(Local0))
+    }
+
+    Method (MAIN, 0, NotSerialized)
+    {
+        Local0 = COP1()
+        CopyObject(Local0, TEST)
+
+        Return (TEST(0xBEEF))
+    }
+}