recipes: switch recipe to zImage

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
3.8: add mmc hang fix from mainline

Fixes: https://github.com/beagleboard/kernel/issues/70

Reported-by: Charles Steinkuehler <charles@steinkuehler.net>
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
ASoC: davinci: McASP: Make code generic remove hardcode

Remove hardcode and make more generic.  This also fixes
audio cape quality.