When the EEPROM is probed, we have this warning:

    at24 0-0052: supply vcc not found, using dummy regulator

Add fixed 3.3v regulator to silence the warning.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>