Add some missing "u-boot,dm-pre-reloc;" properties to UART0, SPI controller and SPI NOR flash node to enable usage in SPL. Otherwise these devices will not be available. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Dennis Gilmore <dgilmore@redhat.com> Tested-by: Dennis Gilmore <dgilmore@redhat.com>