Since there is another 9x9 package for mx6ul, modify the BSP names
of ddr3 arm2 board and evk board to add 14x14 package info.
Also modify the loaded dtb file to align with kernel.

After the change, the build target for mx6ul ddr3 arm2 board is:
mx6ul_14x14_ddr3_arm2_config

and the build target for mx6ul evk board is:
mx6ul_14x14_evk_config

Signed-off-by: Ye.Li