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/common/Kconfig b/common/Kconfig
index 2ab20a6..4c774a4 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -548,6 +548,12 @@
 	help
 	  Enabling this option calls 'misc_init_r' function
 
+config ID_EEPROM
+	bool "Enable I2C connected system identifier EEPROM"
+	help
+	  A number of different systems and vendors enable a vendor-specified
+	  EEPROM that contains various identifying features.
+
 config PCI_INIT_R
 	bool "Enumerate PCI buses during init"
 	depends on PCI