Convert CONFIG_ID_EEPROM to Kconfig

This converts the following to Kconfig:
   CONFIG_ID_EEPROM

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig
index 3954235..cbc8ba8 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -724,6 +724,7 @@
 	imply CMD_NAND
 	imply CMD_REGINFO
 	imply FSL_SATA
+	imply ID_EEPROM
 
 config ARCH_T4240
 	bool