Using CONFIG_SPL_POST_MEM_SUPPORT

[hector at ikatu.com]

Hi folks,

I would like to run the memory tests implemented in 
drivers/post/memory.c. I'm interested in the CONFIG_SPL_POST_MEM_SUPPORT 
configuration (common/spl/Kconfig), but enabling it just seems to 
compile everything under post/drivers folder, it does not run the memory 
tests. Should I call the test functions directly? Which file/function 
would be a good place to call them? If not, which would be the correct 
way of executing those tests?

I'm working with an ARM platform: iMX.8, using a forked repository of 
u-boot: git://source.codeaurora.org/external/imx/uboot-imx.git, branch: 
imx_v2018.03_4.14.78_1.0.0_ga. But it seems that the original u-boot 
source does not differ regarding the CONFIG_SPL_POST_MEM_SUPPORT 
configuration.

Appreciate any help!

Best regards,
Hector