eeprom: at24: add support for 24c2048

commit 37cf28d3b5bca1b532a0b6aac722e7f2788a9294 upstream.

Works with ST M24M02.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Sasha Levin <sashal@kernel.org>