Here are step:
1. bitbake fsl-image-gui -c populate_sdk
2. Install script at, /opt/fsl-imx-x11/3.14.52-1.1.0/
3. Successfully cross compile "Hello Word" & run on i.MX6 SDP
4. source /opt/fsl-imx-x11/3.14.52-1.1.0/environment-setup-cortexa9hf-vfp-neon-poky-linux-gnueabi
5. Install eclipse & other things as given in Yocto Project Application Developer's Guide
6. But, toolchain option is not there, in "Target Architecture"
How to get it there????