common: Move old EEPROM functions into a new header

These functions do not use driver model but are still used. Move them to a
new eeprom.h header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

board/phytec/phycore_rk3288/phycore-rk3288.c

@@ -4,6 +4,7 @@
  * Author: Wadim Egorov <w.egorov@phytec.de>
  */
 
+#include <eeprom.h>
 #include <init.h>
 #include <asm/io.h>
 #include <common.h>