Change in coreboot[master]: src/mediatek/mt8186: Get dram size from mtk ddr info or CBMEM_ID_MEMINFO

[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: Get dram size from mtk ddr info or CBMEM_ID_MEMINFO
......................................................................

Patch Set 15:

(1 comment)

File src/soc/mediatek/common/include/soc/emi.h:

https://review.coreboot.org/c/coreboot/+/62065/comment/3fa25550_722c040a 
PS15, Line 9: size_t mtk_dram_size(void); /* MTK dram size internal interface */
This should be added in the previous CL. No need for comments.