wifi: mwifiex: Support firmware hotfix version in GET_HW_SPEC responses

Support the firmware hotfix version in GET_HW_SPEC responses to avoid an
irritating "Unknown api_id: 5" message on probe.

Based on this commit in NXP's GPLv2-licensed out-of-tree driver:
https://github.com/nxp-imx/mwifiex/commit/27fd8ecca504Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Sherry Sun <sherry.sun@nxp.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/111c7ee895f12d951e95a2edcd06d87ca26a7d0f.1674827105.git.lukas@wunner.de

drivers/net/wireless/marvell/mwifiex/cmdevt.c

@@ -1607,6 +1607,11 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 						    api_rev->major_ver,
 						    api_rev->minor_ver);
 					break;
+				case FW_HOTFIX_VER_ID:
+					mwifiex_dbg(adapter, INFO,
+						    "Firmware hotfix version %d\n",
+						    api_rev->major_ver);
+					break;
 				default:
 					mwifiex_dbg(adapter, FATAL,
 						    "Unknown api_id: %d\n",

drivers/net/wireless/marvell/mwifiex/fw.h

@@ -1048,6 +1048,7 @@ enum API_VER_ID {
 	FW_API_VER_ID = 2,
 	UAP_FW_API_VER_ID = 3,
 	CHANRPT_API_VER_ID = 4,
+	FW_HOTFIX_VER_ID = 5,
 };
 
 struct hw_spec_api_rev {