hexagon: switch to generic sys_execve()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/hexagon/include/asm/unistd.h

@@ -27,5 +27,6 @@
  */
 
 #define sys_mmap2 sys_mmap_pgoff
+#define __ARCH_WANT_SYS_EXECVE
 
 #include <asm-generic/unistd.h>

arch/hexagon/kernel/syscall.c

@@ -35,25 +35,6 @@
  * See signal.c for signal-related system call wrappers.
  */
 
-asmlinkage int sys_execve(char __user *ufilename,
-			  const char __user *const __user *argv,
-			  const char __user *const __user *envp)
-{
-	struct pt_regs *pregs = current_pt_regs();
-	struct filename *filename;
-	int retval;
-
-	filename = getname(ufilename);
-	retval = PTR_ERR(filename);
-	if (IS_ERR(filename))
-		return retval;
-
-	retval = do_execve(filename->name, argv, envp, pregs);
-	putname(filename);
-
-	return retval;
-}
-
 asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
 			 unsigned long parent_tidp, unsigned long child_tidp)
 {