devicetrees: Remove trailing backslash from multiline values

It's not needed to put a backslash at the end of a line for quoted
multiline values. Thus, remove it.

Change-Id: I1b83d53598ba2adeed853a96d6c2c1a21f01a9f7
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78576
Reviewed-by: Erik van den Bogaert <ebogaert@eltan.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/mainboard/razer/blade_stealth_kbl/devicetree.cb b/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
index 1365d85..9e6d4fb 100644
--- a/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
+++ b/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
@@ -152,18 +152,18 @@
 	# Send an extra VR mailbox command for the PS4 exit issue
 	register "SendVrMbxCmd" = "2"
 
-	register "SerialIoDevMode" = "{ \
-		[PchSerialIoIndexI2C0]  = PchSerialIoPci, \
-		[PchSerialIoIndexI2C1]  = PchSerialIoPci, \
-		[PchSerialIoIndexI2C2]  = PchSerialIoDisabled, \
-		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled, \
-		[PchSerialIoIndexI2C4]  = PchSerialIoDisabled, \
-		[PchSerialIoIndexI2C5]  = PchSerialIoDisabled, \
-		[PchSerialIoIndexSpi0]  = PchSerialIoDisabled, \
-		[PchSerialIoIndexSpi1]  = PchSerialIoDisabled, \
-		[PchSerialIoIndexUart0] = PchSerialIoDisabled, \
-		[PchSerialIoIndexUart1] = PchSerialIoDisabled, \
-		[PchSerialIoIndexUart2] = PchSerialIoDisabled, \
+	register "SerialIoDevMode" = "{
+		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C1]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C2]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C4]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C5]  = PchSerialIoDisabled,
+		[PchSerialIoIndexSpi0]  = PchSerialIoDisabled,
+		[PchSerialIoIndexSpi1]  = PchSerialIoDisabled,
+		[PchSerialIoIndexUart0] = PchSerialIoDisabled,
+		[PchSerialIoIndexUart1] = PchSerialIoDisabled,
+		[PchSerialIoIndexUart2] = PchSerialIoDisabled,
 	}"
 
 	device cpu_cluster 0 on end