Zephyr SDK 0.11.0 Beta-1

QEMU:

• Update to released QEMU 4.2.0
• xilinx_qemu fix for wfi
• LEON2 sparc support
  OpenOCD:
• Updated openocd base to 2020016
• Dropped quark support
  GDB:
• arm-zephyr-eabi multi-arch for arm64
  NEWLIB:
• Support newlib retargetable locking configuration