iwlwifi: fw: api: add link to PHY context command struct v1

There are two possible versions of this command in use today,
add a link to v1 as well in the documentation.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211204083238.d7c4ed8e85e0.I524a84e03068ecf7c3125ad028f0ca465d41c0f3@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/api/commands.h

@@ -72,7 +72,8 @@ enum iwl_legacy_cmds {
 
 	/**
 	 * @PHY_CONTEXT_CMD:
-	 * Add/modify/remove a PHY context, using &struct iwl_phy_context_cmd.
+	 * Add/modify/remove a PHY context, using &struct iwl_phy_context_cmd
+	 *	or &struct iwl_phy_context_cmd_v1.
 	 */
 	PHY_CONTEXT_CMD = 0x8,