ns9xxx: prepare for adding support for Digi ns921x processors

The hardware team changed some things that were taken as being common to
all ns9xxx processors up to now.

This patch addresses:

- irqs: s/IRQ_/IRQ_NS9360_/

- system module registers: some registers are still general, their
  definition lives now in include/asm-arm/arch-ns9xxx/regs-sys-common.h.
  The ns9360 specific ones are in .../regs-sys-ns9360.h
  As a result ns9360_systemclock cannot be static inline any more as its
  definition needs regs-sys-ns9360.h.  This becomes a real problem when
  adding support for ns9215 as this will need regs-sys-ns9215.h and
  including both files will not work.  For the same reason
  ns9360_reset() is now non-inline and gpio functions live in their own
  file.

- register mapping: s/ns9xxx_map_io/ns9360_map_io/

- timer registers:  move time.c to time-ns9360.c;
  s/ns9xxx_timer/ns9360_timer/

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
diff --git a/arch/arm/mach-ns9xxx/gpio-ns9360.h b/arch/arm/mach-ns9xxx/gpio-ns9360.h
new file mode 100644
index 0000000..131cd17
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/gpio-ns9360.h
@@ -0,0 +1,13 @@
+/*
+ * arch/arm/mach-ns9xxx/gpio-ns9360.h
+ *
+ * Copyright (C) 2006,2007 by Digi International Inc.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+int __ns9360_gpio_configure(unsigned gpio, int dir, int inv, int func);
+int ns9360_gpio_get_value(unsigned gpio);
+void ns9360_gpio_set_value(unsigned gpio, int value);