News -OpenIL v1.5 release

=== What’s New:

  - Netconf/YANG model for Qbv protocol
  - 802.1AS endpoint mode for TSN switch
  - Industrial IoT support for LS1028A – BLE click board
  - LS1028 Baremetal ENETC support
  - LS1028 ENETC Xenomai RTNET support
  - Enhancement of the TSN protocol for ENETC TSN and TSN switch
  - Enhancement of common TSN configuration tool
  - EdgeScale agent support for LS1043ARDB, LS1046ARDB and LS1028ARDB

OpenIL source site:
         https://github.com/openil/openil
         branch: master
         Tag: OpenIL-Baremetal-201904

The baremetal framework source site:
         https://github.com/openil/u-boot/tree/Baremetal-Framework-v1.4
         Tag: OpenIL-Baremetal-201904