ARM: dts: at91: sama5d2_ptc_ek: fix bootloader env offsets

ARM: dts: at91: sama5d2_ptc_ek: fix bootloader env offsets

[ Upstream commit f602b4871c5f7ac01d37d8b285ca947ba7613065 ]

The offsets for the bootloader environment and its redundant partition
were inverted. Fix the addresses to match our nand flash map available at:

http://www.at91.com/linux4sam/pub/Linux4SAM/SambaSubsections//demo_nandflash_map_lnx4sam5x.png

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>