Disintegrate asm/system.h for MIPS

Disintegrate asm/system.h for MIPS.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
cc: linux-mips@linux-mips.org

arch/mips/netlogic/common/irq.c

@@ -43,7 +43,6 @@
 
 #include <asm/errno.h>
 #include <asm/signal.h>
-#include <asm/system.h>
 #include <asm/ptrace.h>
 #include <asm/mipsregs.h>
 #include <asm/thread_info.h>