ARM: dts: lager: Replace spaces by TABs

Make it easier to compare the file with other similar files.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Link: https://lore.kernel.org/r/20190904120114.1894-3-geert+renesas@glider.be