- the nodes with one pre-relocation property:
'u-boot,dm-pre-reloc' or 'u-boot,dm-spl'
-ftgrep is also used to remove:
+fdtgrep is also used to remove:
- the properties defined in CONFIG_OF_SPL_REMOVE_PROPS
- all the pre-relocation properties
('u-boot,dm-pre-reloc', 'u-boot,dm-spl' and 'u-boot,dm-tpl')