Add DTS files to support iMX6SLL 14x14 LPDDR3/LPDDR2 ARM2.
Due to pin conflicts, need specified DTS for SPINOR enabled.
Signed-off-by: Ye Li
(cherry picked from commit 0879e6cbc067324ca552a769b27215b07e4e8f72)
(cherry picked from commit 0cfd153bc3940657ba228c4a312aa3b9b0812a95)