soc/intel/alderlake: Fix ACPI name for DPTF

The correct ACPI device for DPTM is TCPU; fixing this puts the
participant devices under the correct parent device, and allows
Windows to properly go into S0ix.

TEST=builb/boot Win11 on google/banshee, verify Si0x functional.

Change-Id: I1b3e2655d4d42e008dead9bc87b73ce02868fdfa
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72920
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
diff --git a/src/soc/intel/alderlake/chip.c b/src/soc/intel/alderlake/chip.c
index 87a3029..e0aa983 100644
--- a/src/soc/intel/alderlake/chip.c
+++ b/src/soc/intel/alderlake/chip.c
@@ -93,7 +93,7 @@
 	case SA_DEVFN_TBT2:		return "TRP2";
 	case SA_DEVFN_TBT3:		return "TRP3";
 	case SA_DEVFN_IPU:		return "IPU0";
-	case SA_DEVFN_DPTF:		return "DPTF";
+	case SA_DEVFN_DPTF:		return "TCPU";
 	case PCH_DEVFN_ISH:		return "ISHB";
 	case PCH_DEVFN_XHCI:		return "XHCI";
 	case PCH_DEVFN_I2C0:		return "I2C0";