configs: Remove unused or redundant CONFIG symbols

A number of CONFIG symbols have crept in that are never referenced in
code, so drop them here. Further, we have two symbols being enabled
in headers while already enabled correctly in Kconfig, so these lines
can also be removed.

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 2862257..9656c52 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -29,6 +29,7 @@
 	select ESBC_HDR_LS if CHAIN_OF_TRUST
 	select FSL_LAYERSCAPE
 	select FSL_LSCH3
+	select FSL_TZASC_400
 	select GICV3
 	select NXP_LSCH3_2
 	select SYS_FSL_HAS_CCI400