include/configs: ls1012ardb: adjust kernel_addr_r

include/configs: ls1012ardb: adjust kernel_addr_r

The linux kernel Image is growing quite quickly,
if kernel Image size grow beyond 36 MB then
kernel Image at load address 0x81000000
overlaps with the reserved memory region
at 0x83400000.

Adjust kernel load address(kernel_addr_r) from
0x81000000 to 0x96000000 to avoid kernel Image
overlapping with reserved memory region.

This change fixes the below U-Boot error while
booting uncompressed kernel Image through booti command,
ERROR: reserving fdt memory region failed (addr=83400000 size=c00000)

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>