asm-generic: rename termios.h, signal.h and mman.h

The existing asm-generic versions are incomplete and included
by some architectures. New architectures should be able
to use a generic version, so rename the existing files and
change all users, which lets us add the new files.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/m32r/include/asm/signal.h b/arch/m32r/include/asm/signal.h
index 1a60706..9c1acb2 100644
--- a/arch/m32r/include/asm/signal.h
+++ b/arch/m32r/include/asm/signal.h
@@ -107,7 +107,7 @@
 #define MINSIGSTKSZ	2048
 #define SIGSTKSZ	8192
 
-#include <asm-generic/signal.h>
+#include <asm-generic/signal-defs.h>
 
 #ifdef __KERNEL__
 struct old_sigaction {