uml: stop using libc asm/page.h

Remove includes of asm/page.h from libc code.  This header seems to be
disappearing, and UML doesn't make much use of it anyway.

The one use, PAGE_SHIFT in stub.h, is handled by copying the constant from the
kernel side of the house in common_offsets.h.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/include/sysdep-i386/stub.h

@@ -9,7 +9,6 @@
 #include <sys/mman.h>
 #include <asm/ptrace.h>
 #include <asm/unistd.h>
-#include <asm/page.h>
 #include "stub-data.h"
 #include "kern_constants.h"
 #include "uml-config.h"
@@ -19,7 +18,7 @@ extern void stub_clone_handler(void);
 
 #define STUB_SYSCALL_RET EAX
 #define STUB_MMAP_NR __NR_mmap2
-#define MMAP_OFFSET(o) ((o) >> PAGE_SHIFT)
+#define MMAP_OFFSET(o) ((o) >> UM_KERN_PAGE_SHIFT)
 
 static inline long stub_syscall0(long syscall)
 {