[ARM] 4251/1: Fix sharpsl_pm dependency

The sharpsl_pm code depends on some symbols in the APM emulation code.
Add the dependency for now until a better solution can be found.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index 5e34ca6..3e07346 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -28,6 +28,7 @@
 
 config SHARPSL_PM
 	bool
+	select APM_EMULATION
 
 config SHARP_SCOOP
 	bool