arm64: dts: stratix10: add fpga manager and region

Add the Stratix10 FPGA manager and a FPGA region to the
device tree.

Signed-off-by: Alan Tull <atull@kernel.org>
Signed-off-by: Richard Gong <richard.gong@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>