Add support for sst26vf064b 64Mbit qspi-flash that is present on sama5d2_icp board. Signed-off-by: Mihai Sain <mihai.sain@microchip.com> [eugen.hristev@microchip.com: move u-boot properties to sama5d2_icp-u-boot.dtsi] Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>