system/qcom:Use wlan config path from android property wlan.driver.config

wlan.driver.config android property points to the correct wlan driver
config file. This config file is used to get/set config items related to
wlan driver as indicated from userspace through Qualcomm SoftAP SDK
commands.

Change-Id: I82efd922c72a77b281f007ba95db7042f5ac5e82
CRs-fixed: 315065

softap/sdk/qsap.c

@@ -446,6 +446,9 @@ s32 wifi_qsap_start_softap()
         qsap_del_ctrl_iface();
     }
 
+    /* Ensure correct path for ini file name */
+    qsap_set_ini_filename();
+
     while(retry--) {
         /* May be the configuration file is corrupted or not available, */
         /* copy the default configuration file                          */