ACPI: Kconfig: remove CONFIG_ACPI_SLEEP from source

As it was a synonym for (CONFIG_ACPI && CONFIG_X86),
the ifdefs for it were more clutter than they were worth.

For ia64, just add a few stubs in anticipation of future
S3 or S4 support.

Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/include/asm-i386/suspend.h b/include/asm-i386/suspend.h
index 8dbaafe..a252073 100644
--- a/include/asm-i386/suspend.h
+++ b/include/asm-i386/suspend.h
@@ -21,7 +21,7 @@
 	unsigned long return_address;
 } __attribute__((packed));
 
-#ifdef CONFIG_ACPI_SLEEP
+#ifdef CONFIG_ACPI
 extern unsigned long saved_eip;
 extern unsigned long saved_esp;
 extern unsigned long saved_ebp;