Change in coreboot[master]: soc/intel/apollolake: make use of common cbmem_top_chipset

[Werner Zeh (Code Review)]

Werner Zeh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/36618 )

Change subject: soc/intel/apollolake: make use of common cbmem_top_chipset
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Patch Set 3: Code-Review+2

I have tested this patch on the upcoming mc_apl6 (https://review.coreboot.org/c/coreboot/+/36668/1, just had this mb handy) and it looks fine so far. Mainboard boots without issues with Linux as a payload as well as with SeaBIOS. In Linux I was able to use cbmem tool to read console log, timestamps and TCPA log. So this patch seems to work as intended.