https://bugzilla.tianocore.org/show_bug.cgi?id=1467
https://bugzilla.tianocore.org/show_bug.cgi?id=1374
https://bugzilla.tianocore.org/show_bug.cgi?id=1793



Update Maintainers.txt for the following packages:
* Drivers/OptionRomPkg
* Platform/BeagleBoard/BeagleBoardPkg
* Platform/Intel/QuarkPlatformPkg
* Platform/Intel/Vlv2TbltDevicePkg
* Silicon/Intel/QuarkSocPkg
* Silicon/Intel/Vlv2DeviceRefCodePkg
* Silicon/TexasInstruments/Omap35xxPkg

Add the following platforms to Readme.md
* BeagleBoard
* MinnowBoard Max/Turbot
* Galileo

Cc: Zailiang Sun <zailiang.sun@intel.com>
Cc: Yi Qian <yi.qian@intel.com>
Cc: Kelly Steele <kelly.steele@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Michael Kubacki <michael.a.kubacki@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Zailiang Sun <zailiang.sun@intel.com>
Reviewed-by: Kelly Steele <kelly.steele@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>