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>