qcacmn: set correct buflen value for int ini items

Currently buflen is not updated for int type, causing some
ini items can't be printed via sysfs command.

Change-Id: I86a991252e9fa4031959a51d6827976b6ac89c04
CRs-Fixed: 3612278

cfg/src/cfg.c

@@ -697,6 +697,7 @@ cfg_ini_config_print(struct wlan_objmgr_psoc *psoc, uint8_t *buf,
 			len = qdf_scnprintf(buf, buflen, "%s %d\n", meta->name,
 					    *((int32_t *)offset));
 			buf += len;
+			buflen -= len;
 			break;
 		case CFG_UINT_ITEM:
 			len = qdf_scnprintf(buf, buflen, "%s %d\n", meta->name,