eeprom: ee1004: Add constant EE1004_NUM_PAGES

Add a constant for the number of pages.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/6167f9c5-995a-03c3-c324-e93e2a6c969b@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>