sbp1: Add support for IBM SBP1 board

Add defconfig & devicetree for IBM SBP1 board BMC based on AST2600 SoC.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
4 files changed