[Patch] uml: drop const qualifier for kernel_execve()

["Américo Wang" <xiyou.wangcong@gmail.com>]

UML implementation of kernel_execve() should not have const qualifier,
because it will finally call do_execve() which doesn't have.

This also shuts up a gcc warning on this.

Signed-off-by: WANG Cong <wangcong@zeuux.org>
Cc: Jeff Dike <jdike@addtoit.com>

---
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index c4df705..4fa62ee 100644
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -120,7 +120,7 @@ long sys_olduname(struct oldold_utsname __user * name)
 	return error;
 }

-int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+int kernel_execve(char *filename, char * argv[], char * envp[])
 {
 	mm_segment_t fs;
 	int ret;