iwlagn: rename iwl5000_tx_power_dbm_cmd

iwl5000_tx_power_dbm_cmd really should be iwlagn_tx_power_dbm_cmd,
so rename it.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index 27350ee..16dda2d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -420,12 +420,12 @@
 
 /**
  * Command REPLY_TX_POWER_DBM_CMD = 0x98
- * struct iwl5000_tx_power_dbm_cmd
+ * struct iwlagn_tx_power_dbm_cmd
  */
-#define IWL50_TX_POWER_AUTO 0x7f
-#define IWL50_TX_POWER_NO_CLOSED (0x1 << 6)
+#define IWLAGN_TX_POWER_AUTO 0x7f
+#define IWLAGN_TX_POWER_NO_CLOSED (0x1 << 6)
 
-struct iwl5000_tx_power_dbm_cmd {
+struct iwlagn_tx_power_dbm_cmd {
 	s8 global_lmt; /*in half-dBm (e.g. 30 = 15 dBm) */
 	u8 flags;
 	s8 srv_chan_lmt; /*in half-dBm (e.g. 30 = 15 dBm) */