suspend: constify platform_suspend_ops

While at it, fix two checkpatch errors.
Several non-const struct instances constified by this patch were added after
the introduction of platform_suspend_ops in checkpatch.pl's list of "should
be const" structs (79404849e90a41ea2109bd0e2f7c7164b0c4ce73).

Patch against mainline.
Inspired by hunks of the grsecurity patch, updated for newer kernels.

Signed-off-by: Lionel Debroux <lionel_debroux@yahoo.fr>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 40ead94..f45f3cc 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -122,7 +122,7 @@
  * suspend_set_ops - set platform dependent suspend operations
  * @ops: The new suspend operations to set.
  */
-extern void suspend_set_ops(struct platform_suspend_ops *ops);
+extern void suspend_set_ops(const struct platform_suspend_ops *ops);
 extern int suspend_valid_only_mem(suspend_state_t state);
 
 /**
@@ -147,7 +147,7 @@
 #else /* !CONFIG_SUSPEND */
 #define suspend_valid_only_mem	NULL
 
-static inline void suspend_set_ops(struct platform_suspend_ops *ops) {}
+static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {}
 static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; }
 #endif /* !CONFIG_SUSPEND */