microblaze: Rename ml401 to microblaze-generic

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/MAINTAINERS b/MAINTAINERS
index 60def0c..dfe54a7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -707,7 +707,7 @@
 
 Michal Simek <monstr@monstr.eu>
 
-	ML401		MicroBlaze
+	microblaze-generic	MicroBlaze
 
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 # Coldfire Systems:							#