arch/Kconfig.nxp: Re-organize slightly

Make all of the CHAIN_OF_TRUST options be under a single menu and add a
comment for the rest, so the resulting config file reads more clearly.
Remove duplicate CHAIN_OF_TRUST options from
board/congatec/common/Kconfig.  Remove duplicate NXP_ESBC config
questions and move to arch/Kconfig.nxp.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 7f08733..602b624 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -26,7 +26,7 @@
 config ARCH_LS1028A
 	bool
 	select ARMV8_SET_SMPEN
-	select ESBC_HDR_LS
+	select ESBC_HDR_LS if CHAIN_OF_TRUST
 	select FSL_LAYERSCAPE
 	select FSL_LSCH3
 	select GICV3
@@ -139,7 +139,7 @@
 	bool
 	select ARMV8_SET_SMPEN
 	select ARM_ERRATA_855873 if !TFABOOT
-	select ESBC_HDR_LS
+	select ESBC_HDR_LS if CHAIN_OF_TRUST
 	select FSL_IFC
 	select FSL_LAYERSCAPE
 	select FSL_LSCH3
@@ -189,7 +189,7 @@
 	select ARM_ERRATA_828024
 	select ARM_ERRATA_829520
 	select ARM_ERRATA_833471
-	select ESBC_HDR_LS
+	select ESBC_HDR_LS if CHAIN_OF_TRUST
 	select FSL_IFC
 	select FSL_LAYERSCAPE
 	select FSL_LSCH3
@@ -242,7 +242,7 @@
 config ARCH_LX2162A
 	bool
 	select ARMV8_SET_SMPEN
-	select ESBC_HDR_LS
+	select ESBC_HDR_LS if CHAIN_OF_TRUST
 	select FSL_DDR_BIST
 	select FSL_DDR_INTERACTIVE
 	select FSL_LAYERSCAPE
@@ -281,7 +281,7 @@
 config ARCH_LX2160A
 	bool
 	select ARMV8_SET_SMPEN
-	select ESBC_HDR_LS
+	select ESBC_HDR_LS if CHAIN_OF_TRUST
 	select FSL_DDR_BIST
 	select FSL_DDR_INTERACTIVE
 	select FSL_LAYERSCAPE
@@ -461,11 +461,6 @@
 	 Enable the EMC2305 fan controller for configuration of fan
 	 speed.
 
-config NXP_ESBC
-	bool "NXP_ESBC"
-	help
-		Enable Freescale Secure Boot feature
-
 config QSPI_AHB_INIT
 	bool "Init the QSPI AHB bus"
 	help