sysinfo: Add driver for IOT2050 boards

This brings a sysinfo driver and DT entry for the IOT2050 board series.
It translates the board information passed from SE-Boot to SPL into
values that can be retrieved via the sysinfo API. Will is already used
to fill the SMBIOS table when booting via EFI.

Signed-off-by: Baocheng Su <baocheng.su@siemens.com>
Signed-off-by: Li Hua Qian <huaqian.li@siemens.com>
[Jan: split-off as separate patch, cleanup]
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
5 files changed