configs: rk3566-nand: include rk3568-nand.config

Change-Id: I3b2690444089c48ac4d2b53eb8bfe9256d48137c
Signed-off-by: Wu Liangqing <wlq@rock-chips.com>

configs: rk3566 add rk3566-nand.config for nand

Signed-off-by: wlq <wlq@rock-chips.com>
Change-Id: Ifc84f4996add98ce9fc3b451b5a91b882a6594c9