eeprom: Deprecate the legacy eeprom driver

Time has come to get rid of the old eeprom driver. The at24 driver
should be used instead. So mark the eeprom driver as deprecated and
give users some time to migrate. Then we can remove the legacy
eeprom driver completely.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20190902104838.058725c2@endymionSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/eeprom/Kconfig

@@ -45,13 +45,16 @@ config EEPROM_AT25
 	  will be called at25.
 
 config EEPROM_LEGACY
-	tristate "Old I2C EEPROM reader"
+	tristate "Old I2C EEPROM reader (DEPRECATED)"
 	depends on I2C && SYSFS
 	help
 	  If you say yes here you get read-only access to the EEPROM data
 	  available on modern memory DIMMs and Sony Vaio laptops via I2C. Such
 	  EEPROMs could theoretically be available on other devices as well.
 
+	  This driver is deprecated and will be removed soon, please use the
+	  better at24 driver instead.
+
 	  This driver can also be built as a module.  If so, the module
 	  will be called eeprom.