iwlwifi: define minimum valid address for umac_error_event_table in cfg

We now have two different minimum valid values for
umac_error_event_table.  To avoid hardcoding the minimum value in the
driver, add a value to cfg where it can be read from.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/9000.c b/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
index e8b5ff4..af7c4f3 100644
--- a/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
+++ b/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
@@ -149,7 +149,8 @@ static const struct iwl_tt_params iwl9000_tt_params = {
 	.mac_addr_from_csr = true,					\
 	.rf_id = true,							\
 	.nvm_type = IWL_NVM_EXT,					\
-	.dbgc_supported = true
+	.dbgc_supported = true,						\
+	.min_umac_error_event_table = 0x800000
 
 const struct iwl_cfg iwl9160_2ac_cfg = {
 	.name = "Intel(R) Dual Band Wireless AC 9160",