acpi: remerge uacpi as inhouse

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

libs/uacpi/tests/test-cases/copy-object-to-predefined.asl

@@ -0,0 +1,31 @@
+// Name: CopyObject to predefined works
+// Expect: str => HelloWorld
+
+DefinitionBlock ("x.aml", "SSDT", 1, "uTEST", "TESTTABL", 0xF0F0F0F0)
+{
+    Method (HELO) {
+        Return ("Hello")
+    }
+
+    Method (WRLD) {
+        Return ("World")
+    }
+
+    Method (MAIN) {
+        OperationRegion(NVSM, SystemMemory, 0x100000, 128)
+        Field (NVSM, ByteAcc, Lock, WriteAsZeros) {
+            FILD, 8,
+        }
+
+        FILD = 0xFF
+
+        CopyObject(HELO, \)
+        CopyObject(WRLD, _GL)
+
+        If (FILD != 0xFF) {
+            Return ("Locked field read-back failed")
+        }
+
+        Return (Concatenate(\(), _GL()))
+    }
+}