Hello ,
Thanks for your help . I did the steps given in the wiki. We cloned the repos then created the build directory and We compiled using
 
RUN_OPT="--target uboot" make run/demo

Then we copied the image from the build/var/run/demo/uImage into the SD card.
After that we connected the board and worked on the following commands.

u-boot> mmc dev 1
u-boot> fatload mmc 1:1 0x10800000 uImage
u-boot> bootm 10800000

We are getting the following message.


MX6Q SABRELITE U-Boot > bootm 10800000
## Booting kernel from Legacy Image at 10800000 ...
Image Name:
Image Type: ARM Linux Kernel Image (gzip compressed)
Data Size: 1977409 Bytes = 1.9 MB
Load Address: 10001000
Entry Point: 10001e ... OK

Starting kernel ...

int main(): --- create local services ---
int main(): --- start init ---
int main(): transferred 1019int main(): --- init created, waiting for exit condition ---
[init] Could not open file "ld.lib.so"
[init] nitpicker: no route to service "Framebuffer"
[init -> nitpicker] C++ runtime: Genode::Parent::Service_denied
[init -> nitpicker] void* abort(): abort called
[init -> launchpad] Could not open file "ld.lib.so"



wheather is the expected output? 

Thanks