Revert "tuna: include tune-cortexa9"

This reverts commit 4a99926d74367e8945ebb24e56717bd2d7aba9ed.

We want both cortexa8* cortexa9* tunes available here.

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
tuna: fix extra space in TUNE_CCARGS

* see http://lists.linuxtogo.org/pipermail/openembedded-core/2013-April/038755.html for details
shr: change feeds to shr-next for some next release

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>