iwlwifi: mvm: add debugfs entry for ps_disabled

In order to make debugging easier, add an entry to export the
ps_disabled value via debugfs.  To make usage of the
debugfs_create_*() function easier, change the ps_disabled element to
u8.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index 83e562b..1fcbc23 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -1447,6 +1447,9 @@
 		goto err;
 #endif
 
+	if (!debugfs_create_u8("ps_disabled", S_IRUSR,
+			       mvm->debugfs_dir, &mvm->ps_disabled))
+		goto err;
 	if (!debugfs_create_blob("nvm_hw", S_IRUSR,
 				  mvm->debugfs_dir, &mvm->nvm_hw_blob))
 		goto err;