[M] Change in coreboot[master]: drivers/pc80/rtc/mc146818rtc.c: Add Kconfig for RTC CMOS base addresses

[Kyösti Mälkki (Code Review)]

Attention is currently required from: Paul Menzel, Angel Pons, Jonathon Hall, Felix Held.

Kyösti Mälkki has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74903 )

Change subject: drivers/pc80/rtc/mc146818rtc.c: Add Kconfig for RTC CMOS base addresses
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/74903/comment/1ce4f1d0_f6de307e 
PS2, Line 17: and the EC BRAM bank 1.
To me, this paragraph seems a bit unnecessary. Details are in the follow-up that actually configures said hardware differently.

File src/drivers/pc80/rtc/Kconfig:

https://review.coreboot.org/c/coreboot/+/74903/comment/da9fde95_03645378 
PS2, Line 9: 	depends on DRIVERS_MC146818
Should this be repeated or grouped under 'if' with added entries?