MAINTAINERS: Downgrade target-m68k to Odd Fixes

m68k patches are not being handled, so let's downgrade to Odd Fixes.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Acked-by: NPaul Brook <paul@codesourcery.com>

MAINTAINERS

@@ -78,7 +78,7 @@ F: target-lm32/
 
 M68K
 M: Paul Brook <paul@codesourcery.com>
-S: Maintained
+S: Odd Fixes
 F: target-m68k/
 
 MicroBlaze