ARM: imx6q_logic: Fix broken booting by moving fdt_addr_r address

The loading address is too close to the kernel address, so newer kernels
may overlap memory space, so loading the device tree may corrupt zImage.

This patch moves the fdt_addr_r to 0x14000000 which is also consistent
with guidance that the kernel be allocated 32MB.  This places it
in the same place as the ramdisk, so this patch moves the ramdisk address
512KB after the fdt.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>