Change in coreboot[master]: src/mediatek/mt8186: Implement sdram_size() to get real dram size

[Yu-Ping Wu (Code Review)]

Attention is currently required from: Hung-Te Lin, Xixi Chen.
Yu-Ping Wu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62065 )

Change subject: src/mediatek/mt8186: Implement sdram_size() to get real dram size
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Patch Set 20: Code-Review+2

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62065/comment/1bf156a6_ad33ee3e 
PS20, Line 9: set to 4GB by default
hard-coded to 4GB

File src/soc/mediatek/mt8186/emi.c:

https://review.coreboot.org/c/coreboot/+/62065/comment/e3af3768_43dbdb94 
PS20, Line 28: 	channel = (void *)((uintptr_t)mc + sizeof(*mc));
Please fix this.