sb/amd/hudson/acpi: Fix illegal object references

Issue spotted using IASL 20190215 on mainboard GIZMOSPHERE_GIZMO2:
"Object is created temporarily in another method and cannot be accessed"

Change-Id: I1e4ca2c765083db3a27e415d3a69bef0912a606b
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/31554
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/southbridge/amd/pi/hudson/acpi/fch.asl b/src/southbridge/amd/pi/hudson/acpi/fch.asl
index 0c6e768..17f5140 100644
--- a/src/southbridge/amd/pi/hudson/acpi/fch.asl
+++ b/src/southbridge/amd/pi/hudson/acpi/fch.asl
@@ -129,6 +129,13 @@
 	Return(CRES) /* note to change the Name buffer */
 } /* end of Method(_SB.PCI0._CRS) */
 
+#if IS_ENABLED(CONFIG_HUDSON_IMC_FWM)
+	/* TODO: It is unstable.
+	 * might be fixed by restructuring
+	 */
+	#include "acpi/AmdImc.asl" /* Hudson IMC function */
+#endif
+
 /*
  *
  *               FIRST METHOD CALLED UPON BOOT
@@ -155,8 +162,6 @@
 	OSFL()
 
 #if IS_ENABLED(CONFIG_HUDSON_IMC_FWM)
-	/* TODO: It is unstable. */
-	#include "acpi/AmdImc.asl" /* Hudson IMC function */
 #if IS_ENABLED(CONFIG_ACPI_ENABLE_THERMAL_ZONE)
 	ITZE() /* enable IMC Fan Control*/
 #endif