bnxt_en: hide CONFIG_DETECT_HUNG_TASK specific code

JIRA: https://issues.redhat.com/browse/RHEL-76568

commit 8ff6175
Author: Arnd Bergmann <arnd@arndb.de>
Date:   Wed Apr 23 18:28:21 2025 +0200

    bnxt_en: hide CONFIG_DETECT_HUNG_TASK specific code

    The CONFIG_DEFAULT_HUNG_TASK_TIMEOUT setting is only available when the
    hung task detection is enabled, otherwise the code now produces a build
    failure:

    drivers/net/ethernet/broadcom/bnxt/bnxt.c:10188:21: error: use of undeclared identifier 'CONFIG_DEFAULT_HUNG_TASK_TIMEOUT'
     10188 |             max_tmo_secs > CONFIG_DEFAULT_HUNG_TASK_TIMEOUT) {

    Enclose this warning logic in an #ifdef to ensure this builds.

    Fixes: 0fcad44 ("bnxt_en: Change FW message timeout warning")
    Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    Reviewed-by: Michael Chan <michael.chan@broadcom.com>
    Link: https://patch.msgid.link/20250423162827.2189658-1-arnd@kernel.org
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Shruti Parab <shruti.parab@broadcom.com>

Author: Shruti Parab

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -10117,11 +10117,13 @@ static int bnxt_hwrm_ver_get(struct bnxt *bp)
 	if (!bp->hwrm_cmd_max_timeout)
 		bp->hwrm_cmd_max_timeout = HWRM_CMD_MAX_TIMEOUT;
 	max_tmo_secs = bp->hwrm_cmd_max_timeout / 1000;
+#ifdef CONFIG_DETECT_HUNG_TASK
 	if (bp->hwrm_cmd_max_timeout > HWRM_CMD_MAX_TIMEOUT ||
 	    max_tmo_secs > CONFIG_DEFAULT_HUNG_TASK_TIMEOUT) {
 		netdev_warn(bp->dev, "Device requests max timeout of %d seconds, may trigger hung task watchdog (kernel default %ds)\n",
 			    max_tmo_secs, CONFIG_DEFAULT_HUNG_TASK_TIMEOUT);
 	}
+#endif
 
 	if (resp->hwrm_intf_maj_8b >= 1) {
 		bp->hwrm_max_req_len = le16_to_cpu(resp->max_req_win_len);