Fix for sdcard1 on scorpion

scorpion has sdcard1 on /devices/msm_sdcc.3/mmc_host

I am not sure how to propose this change but the current CM12 build for scorpion_windy has /devices/msm_sdcc.2/mmc_host which is not correct.
This is the change I want to achieve with this patch, changing '2' to '3'.