update bcmdhd driver from GT-9505 Source

drivers pulled from http://review.cyanogenmod.org/#/c/36122/

Change-Id: Ide4aef99ee1d594f4222ae69aca0bdb7d563e80a
Correct md5sum executable on OSX hosts

On OSX hosts the md5sum executable is called md5 instead.

Change-Id: I0b8e3ab137136be6e45fd4b9f77f2c036e8b981a
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_kernel_samsung_smdk4412 into phablet