cmd/eeprom.c: prepend 0x to hex numbers in output message format

If the numbers do not happen to contain any digits from [a-f], it's
not clear that they are base 16.
Signed-off-by: NKlaus H. Sorensen <khso@prevas.dk>
Signed-off-by: NRasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: NLukasz Majewski <lukma@denx.de>
Reviewed-by: NHeiko Schocher <hs@denx.de>

cmd/eeprom.c

@@ -308,7 +308,7 @@ static int eeprom_execute_command(enum eeprom_action action, int i2c_bus,
 {
 	int rcode = 0;
 	const char *const fmt =
-		"\nEEPROM @0x%lX %s: addr %08lx  off %04lx  count %ld ... ";
+		"\nEEPROM @0x%lX %s: addr 0x%08lx  off 0x%04lx  count %ld ... ";
 #ifdef CONFIG_CMD_EEPROM_LAYOUT
 	struct eeprom_layout layout;
 #endif