powerpc/fsl: Make fsl_deep_sleep() usable w/ modules and non-83xx builds

Export is needed for modular builds, and a static inline stub is needed
for non-MPC83xx builds.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/platforms/83xx/suspend.c

@@ -96,6 +96,7 @@ int fsl_deep_sleep(void)
 {
 	return deep_sleeping;
 }
+EXPORT_SYMBOL(fsl_deep_sleep);
 
 static int mpc83xx_change_state(void)
 {