For default Android JB4.3 GA1.1.0 BSP, iMX6SL EVK board doesn't support BlueTooth, attached is the patch for the BSP to support AR3002 bluetooth.
The hardware information can be found at: https://community.freescale.com/docs/DOC-95016
iMX6SL_EVK_BlueTooth_Patch_for_JB4.3_1.1.0.tar.gz: these are the patch files.
iMX6SL_EVK_BlueTooth_Support_for_JB4.3_1.1.0.tar.gz: these are the patched source code files.
Please select one of above to use.