powerpc: mpc83xx: convert CONFIG_FSL_ELBC to Kconfig

This complements commit 068789773d0 which did the conversion for
mpc85xx.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Mario Six <mario.six@gdsys.cc>
diff --git a/arch/powerpc/cpu/mpc83xx/Kconfig b/arch/powerpc/cpu/mpc83xx/Kconfig
index e9f6e93..5d76502 100644
--- a/arch/powerpc/cpu/mpc83xx/Kconfig
+++ b/arch/powerpc/cpu/mpc83xx/Kconfig
@@ -221,6 +221,7 @@
 	select MPC83XX_PCI_SUPPORT
 	select MPC83XX_SECOND_I2C_SUPPORT
 	select SYS_FSL_ERRATUM_ESDHC111
+	select FSL_ELBC
 
 config ARCH_MPC831X
 	bool
@@ -232,6 +233,7 @@
 	bool
 	select ARCH_MPC831X
 	select MPC83XX_SECOND_I2C_SUPPORT
+	select FSL_ELBC
 
 config ARCH_MPC8315
 	bool
@@ -239,6 +241,7 @@
 	select MPC83XX_PCIE1_SUPPORT
 	select MPC83XX_PCIE2_SUPPORT
 	select MPC83XX_SATA_SUPPORT
+	select FSL_ELBC
 
 config ARCH_MPC832X
 	bool
@@ -275,6 +278,7 @@
 	select MPC83XX_SATA_SUPPORT
 	select MPC83XX_LDP_PIN
 	select MPC83XX_SECOND_I2C_SUPPORT
+	select FSL_ELBC
 
 config SYS_IMMR
 	hex "Value for IMMR"
@@ -318,6 +322,9 @@
 
 endmenu
 
+config FSL_ELBC
+	bool
+
 source "board/esd/vme8349/Kconfig"
 source "board/freescale/mpc8308rdb/Kconfig"
 source "board/freescale/mpc8313erdb/Kconfig"