APM support depends on CONFIG_PM_SLEEP

Commit 296699d broke building APM
support if CONFIG_PM_SLEEP is not set.

Reported by Toralf Förster <toralf.foerster@gmx.de>

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
[ Simplified a bit as suggested by Rafael.   -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/i386/Kconfig

@@ -938,7 +938,7 @@ source "drivers/acpi/Kconfig"
 
 menuconfig APM
 	tristate "APM (Advanced Power Management) BIOS support"
-	depends on PM && !X86_VISWS
+	depends on PM_SLEEP && !X86_VISWS
 	---help---
 	  APM is a BIOS specification for saving power using several different
 	  techniques. This is mostly useful for battery powered laptops with