arm64: Pine64: update FDT files

The originally committed .dts files for the Pine64 were from an early
proof-of-concept version and should have never been committed upstream.
Replace them with much more mature versions, which also use a different
naming scheme.
Please note that at this point there is at least one binding which has
not been agreed upon, so this is subject to change.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/configs/pine64_plus_defconfig b/configs/pine64_plus_defconfig
index 0494a9f..0977334 100644
--- a/configs/pine64_plus_defconfig
+++ b/configs/pine64_plus_defconfig
@@ -4,7 +4,7 @@
 CONFIG_DRAM_CLK=672
 CONFIG_DRAM_ZQ=3881915
 # CONFIG_VIDEO is not set
-CONFIG_DEFAULT_DEVICE_TREE="pine64_plus"
+CONFIG_DEFAULT_DEVICE_TREE="sun50i-a64-pine64-plus"
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_IMLS is not set