[PATCH] uml: s390 preparation, delay moved to arch

s390 has fast read access to realtime clock (nanosecond resolution).  So it
makes sense to have an arch-specific implementation not only of __delay, but
__udelay also.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/kernel/ksyms.c

@@ -10,7 +10,6 @@
 #include "linux/spinlock.h"
 #include "linux/highmem.h"
 #include "asm/current.h"
-#include "asm/delay.h"
 #include "asm/processor.h"
 #include "asm/unistd.h"
 #include "asm/pgalloc.h"
@@ -28,8 +27,6 @@ EXPORT_SYMBOL(uml_physmem);
 EXPORT_SYMBOL(set_signals);
 EXPORT_SYMBOL(get_signals);
 EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(__const_udelay);
-EXPORT_SYMBOL(__udelay);
 EXPORT_SYMBOL(sys_waitpid);
 EXPORT_SYMBOL(task_size);
 EXPORT_SYMBOL(flush_tlb_range);