MAINTAINERS: Update linux-omap git repository

linux-omap is back at git.kernel.org. Path is the same than before except
-2.6 appendix.
Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

MAINTAINERS

@@ -4662,7 +4662,7 @@ L:	linux-omap@vger.kernel.org
 W:	http://www.muru.com/linux/omap/
 W:	http://linux.omap.com/
 Q:	http://patchwork.kernel.org/project/linux-omap/list/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git
 S:	Maintained
 F:	arch/arm/*omap*/