linux.inc: unset CONFIG_LOCALVERSION_AUTO to not get 2.6.27.2-svn8826-dirty26 like...

linux.inc: unset CONFIG_LOCALVERSION_AUTO to not get 2.6.27.2-svn8826-dirty26 like names

Year ago we removed CONFIG_LOCALVERSION from .config to get more sane names of
kernels. Today with 2.6.27.2 I got 2.6.27.2-svn8826-dirty26 kernel which was
2.6.27.2-svn8826-dirty9 on device so no modules ;(

This patch changes this by unsetting CONFIG_LOCALVERSION_AUTO variable.

Signed-off-by: Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>
Acked-by: Koen Kooi <koen@openembedded.org>
Acked-by: Otavio Salvador <otavio@ossystems.com.br>