sysinfo contains both CBMEM_ID_MEMINFO and CBMEM_ID_MEM_CHIP.
This new function allows to easily retrieve the amount of memory the
system has based on the mentioned CBMEM entries structures.
BUG=b:450374306
TEST=Checked on Google/Brya/Omnigul (x86) - MEMINFO
TEST=Checked on Google/Rauru/Navi (ARM64) - MEM_CHIP
Change-Id: Iaf69c54dfb3d2eaffbccacee8bee3be425b78a3f
Signed-off-by: Jakub Czapiga <czapiga@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90430
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
c109fc92ff