mb/purism/librem_cnl/acpi: Use Printf() for debug prints

Change-Id: I587dcd8fc208562ecf0e0ba6ea9f741538511192
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60428
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
diff --git a/src/mainboard/purism/librem_cnl/variants/librem_14/include/variant/acpi/gpe.asl b/src/mainboard/purism/librem_cnl/variants/librem_14/include/variant/acpi/gpe.asl
index 611643b..8045aaf 100644
--- a/src/mainboard/purism/librem_cnl/variants/librem_14/include/variant/acpi/gpe.asl
+++ b/src/mainboard/purism/librem_cnl/variants/librem_14/include/variant/acpi/gpe.asl
@@ -2,7 +2,7 @@
 
 // GPP_E15 SWI
 Method (_L49, 0, Serialized) {
-	Debug = Concatenate("GPE _L49: ", ToHexString(\_SB.PCI0.LPCB.EC0.WFNO))
+	Printf ("GPE _L49: %o", ToHexString(\_SB.PCI0.LPCB.EC0.WFNO))
 	If (\_SB.PCI0.LPCB.EC0.ECOK) {
 		If (\_SB.PCI0.LPCB.EC0.WFNO == One) {
 			Notify(\_SB.LID0, 0x80)