mmc: Remove Russell as primecell mci maintainer
mmc: Remove Russell as primecell mci maintainer

Russell no longer has the resources to fully test the controller, so
he is stepping down as maintainer.

Signed-off-by: Pierre Ossman <8b64f2aeec7ea42cd6838e5b2901f7aa61dfa5d4@drzeus.cx>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas