wlan: increase MAX_CFG_INI_ITEMS

Currently when the driver loads it logs an error that
MAX_CFG_INI_ITEMS is too small.  So increase the value to compensate
for the configuration items that have been recently added and to allow
some future growth as well.

Change-Id: I043b1cc9fae6d6b5255206fde3111a3d008fd908
CRs-fixed: 458838
diff --git a/CORE/HDD/inc/wlan_hdd_cfg.h b/CORE/HDD/inc/wlan_hdd_cfg.h
index aab86f7..af59281 100644
--- a/CORE/HDD/inc/wlan_hdd_cfg.h
+++ b/CORE/HDD/inc/wlan_hdd_cfg.h
@@ -65,7 +65,7 @@
 #include <csrApi.h>
 
 //Number of items that can be configured
-#define MAX_CFG_INI_ITEMS   256
+#define MAX_CFG_INI_ITEMS   320
 
 // Defines for all of the things we read from the configuration (registry).