wifi: iwlwifi: mei: unify iwl_mei_set_power_limit() prototype

The two versions of iwl_mei_set_power_limit() are a bit different,
and while really the const isn't all that necessary on the inline,
it's still better to have it be the same.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240512072733.854427753c92.I557716085cb1f6a35d1f97640388fa421f42a56a@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mei/iwl-mei.h

 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (C) 2021-2023 Intel Corporation
+ * Copyright (C) 2021-2024 Intel Corporation
  */
 
 #ifndef __iwl_mei_h__
@@ -488,7 +488,7 @@ static inline void iwl_mei_set_nic_info(const u8 *mac_address, const u8 *nvm_add
 static inline void iwl_mei_set_country_code(u16 mcc)
 {}
 
-static inline void iwl_mei_set_power_limit(__le16 *power_limit)
+static inline void iwl_mei_set_power_limit(const __le16 *power_limit)
 {}
 
 static inline int iwl_mei_register(void *priv,