staging: csr: oska: remove io.h

Nothing is including it, so remove it.

Cc: Mikko Virkkilä <mikko.virkkila@bluegiga.com>
Cc: Lauri Hintsala <Lauri.Hintsala@bluegiga.com>
Cc: Riku Mettälä <riku.mettala@bluegiga.com>
Cc: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/csr/oska/all.h

@@ -41,7 +41,6 @@
  *
  * There are additional modules that are not included in <oska/all.h>.
  *
- *   - \ref io "Memory mapped I/O" <oska/io.h>
  *   - \ref refcount "Reference Counting" <oska/refcount.h>
  *   - \ref list "Linked lists" <oska/list.h>
  *   - \ref trace "Tracing messages" <oska/trace.h>

drivers/staging/csr/oska/io.h

-/*
- * OSKA Linux implementation -- memory mapped I/O.
- *
- * Copyright (C) 2009 Cambridge Silicon Radio Ltd.
- *
- * Refer to LICENSE.txt included with this source code for details on
- * the license terms.
- */
-#ifndef __OSKA_LINUX_IO_H
-#define __OSKA_LINUX_IO_H
-
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/kernel-compat.h>
-
-typedef void __iomem *os_io_mem_t;
-
-static inline uint8_t os_io_read8(os_io_mem_t base, unsigned offset)
-{
-    return readb(base + offset);
-}
-
-static inline uint16_t os_io_read16(os_io_mem_t base, unsigned offset)
-{
-    return readw(base + offset);
-}
-
-static inline uint32_t os_io_read32(os_io_mem_t base, unsigned offset)
-{
-    return readl(base + offset);
-}
-
-static inline uint64_t os_io_read64(os_io_mem_t base, unsigned offset)
-{
-    return readq(base + offset);
-}
-
-static inline void os_io_write8(os_io_mem_t base, unsigned offset, uint8_t val)
-{
-    writeb(val, base + offset);
-}
-
-static inline void os_io_write16(os_io_mem_t base, unsigned offset, uint16_t val)
-{
-    writew(val, base + offset);
-}
-
-static inline void os_io_write32(os_io_mem_t base, unsigned offset, uint32_t val)
-{
-    writel(val, base + offset);
-}
-
-static inline void os_io_write64(os_io_mem_t base, unsigned offset, uint64_t val)
-{
-    writeq(val, base + offset);
-}
-
-static inline void os_io_memory_barrier(void)
-{
-    mb();
-}
-
-#endif /* #ifndef __OSKA_LINUX_IO_H */