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/powerpc/cpu/mpc83xx/Kconfig b/arch/powerpc/cpu/mpc83xx/Kconfig
index 184063c..bf3be50 100644
--- a/arch/powerpc/cpu/mpc83xx/Kconfig
+++ b/arch/powerpc/cpu/mpc83xx/Kconfig
@@ -27,30 +27,36 @@
 config TARGET_MPC8313ERDB
 	bool "Support MPC8313ERDB"
 	select SUPPORT_SPL
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MPC8315ERDB
 	bool "Support MPC8315ERDB"
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MPC8323ERDB
 	bool "Support MPC8323ERDB"
 
 config TARGET_MPC832XEMDS
 	bool "Support MPC832XEMDS"
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MPC8349EMDS
 	bool "Support MPC8349EMDS"
 	select SYS_FSL_DDR
 	select SYS_FSL_HAS_DDR2
 	select SYS_FSL_DDR_BE
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MPC8349ITX
 	bool "Support MPC8349ITX"
 
 config TARGET_MPC837XEMDS
 	bool "Support MPC837XEMDS"
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MPC837XERDB
 	bool "Support MPC837XERDB"
+	select BOARD_EARLY_INIT_F
 
 config TARGET_IDS8313
 	bool "Support ids8313"
diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig
index 00dd3c1..bfa63e4 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -33,12 +33,14 @@
 	bool "Support BSC9131RDB"
 	select ARCH_BSC9131
 	select SUPPORT_SPL
+	select BOARD_EARLY_INIT_F
 
 config TARGET_BSC9132QDS
 	bool "Support BSC9132QDS"
 	select ARCH_BSC9132
 	select BOARD_LATE_INIT if CHAIN_OF_TRUST
 	select SUPPORT_SPL
+	select BOARD_EARLY_INIT_F
 
 config TARGET_C29XPCIE
 	bool "Support C29XPCIE"
diff --git a/arch/powerpc/cpu/mpc86xx/Kconfig b/arch/powerpc/cpu/mpc86xx/Kconfig
index ff21c48..fcac658 100644
--- a/arch/powerpc/cpu/mpc86xx/Kconfig
+++ b/arch/powerpc/cpu/mpc86xx/Kconfig
@@ -11,10 +11,12 @@
 config TARGET_SBC8641D
 	bool "Support sbc8641d"
 	select ARCH_MPC8641
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MPC8610HPCD
 	bool "Support MPC8610HPCD"
 	select ARCH_MPC8610
+	select BOARD_EARLY_INIT_F
 
 config TARGET_MPC8641HPCN
 	bool "Support MPC8641HPCN"