[PATCH 13/18] rtc: sd2405al: drop needless struct sd2405al::rtc member

[Tóth János]

Hi!

> We can drop it from the structure and just use a local temporary
> variable, reducing runtime memory consumption by a few bytes.

It works on real hardware.

Tested-by: Tóth János <gomba007 at gmail.com>

Regards,
TJ