linux-atomic.c (<asm/unistd.h>): Remove #include.

2015-07-22  Chung-Lin Tang  <cltang@codesourcery.com>

	libgcc/
	* config/nios2/linux-atomic.c (<asm/unistd.h>): Remove #include.
	(EFAULT,EBUSY,ENOSYS): Delete unused #defines.

From-SVN: r226063

libgcc/ChangeLog

+2015-07-22  Chung-Lin Tang  <cltang@codesourcery.com>
+
+	* config/nios2/linux-atomic.c (<asm/unistd.h>): Remove #include.
+	(EFAULT,EBUSY,ENOSYS): Delete unused #defines.
+
 2015-07-17  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* offloadstuff.c: Constify host data.

libgcc/config/nios2/linux-atomic.c

@@ -20,11 +20,6 @@ a copy of the GCC Runtime Library Exception along with this program;
 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 <http://www.gnu.org/licenses/>.  */
 
-#include <asm/unistd.h>
-#define EFAULT  14
-#define EBUSY   16
-#define ENOSYS  38
-
 /* We implement byte, short and int versions of each atomic operation
    using the kernel helper defined below.  There is no support for
    64-bit operations yet.  */