Convert CONFIG_BOARD_EARLY_INIT_F to Kconfig

This converts the following to Kconfig:
   CONFIG_BOARD_EARLY_INIT_F

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/cpu/armv7/mx6/Kconfig b/arch/arm/cpu/armv7/mx6/Kconfig
index b8dc5c8..3b04091 100644
--- a/arch/arm/cpu/armv7/mx6/Kconfig
+++ b/arch/arm/cpu/armv7/mx6/Kconfig
@@ -162,6 +162,7 @@
 	select BOARD_LATE_INIT
 	select DM
 	select DM_THERMAL
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MX6SABRESD
 	bool "mx6sabresd"
@@ -169,6 +170,7 @@
 	select SUPPORT_SPL
 	select DM
 	select DM_THERMAL
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MX6SLEVK
 	bool "mx6slevk"
@@ -187,6 +189,7 @@
 	select SUPPORT_SPL
 	select DM
 	select DM_THERMAL
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MX6SXSABREAUTO
         bool "mx6sxsabreauto"
@@ -194,6 +197,7 @@
 	select MX6SX
         select DM
         select DM_THERMAL
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MX6UL_9X9_EVK
 	bool "mx6ul_9x9_evk"
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index d93a61d..47897f4 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -6,6 +6,7 @@
 	select SYS_FSL_MMDC
 	select SYS_FSL_ERRATUM_A010315
 	select ARCH_EARLY_INIT_R
+	select BOARD_EARLY_INIT_F
 
 config ARCH_LS1043A
 	bool
@@ -24,6 +25,7 @@
 	select SYS_FSL_HAS_DDR3
 	select SYS_FSL_HAS_DDR4
 	select ARCH_EARLY_INIT_R
+	select BOARD_EARLY_INIT_F
 
 config ARCH_LS1046A
 	bool
@@ -41,6 +43,7 @@
 	select SYS_FSL_HAS_DDR4
 	select SYS_FSL_SRDS_2
 	select ARCH_EARLY_INIT_R
+	select BOARD_EARLY_INIT_F
 
 config ARCH_LS2080A
 	bool
@@ -66,6 +69,7 @@
 	select SYS_FSL_ERRATUM_A009942
 	select SYS_FSL_ERRATUM_A010165
 	select ARCH_EARLY_INIT_R
+	select BOARD_EARLY_INIT_F
 
 config FSL_LSCH2
 	bool