um: get rid of pointless include "..." where include <...> will do

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/arch/um/drivers/mconsole.h b/arch/um/drivers/mconsole.h
index c139ae1..8b22535 100644
--- a/arch/um/drivers/mconsole.h
+++ b/arch/um/drivers/mconsole.h
@@ -12,7 +12,7 @@
 #define u32 uint32_t
 #endif
 
-#include "sysdep/ptrace.h"
+#include <sysdep/ptrace.h>
 
 #define MCONSOLE_MAGIC (0xcafebabe)
 #define MCONSOLE_MAX_DATA (512)