[Patch][edk2-platforms/devel-MinPlatform] PurleyOpenBoardPkg-Misc: update Readme and Maintainers info

["Zhou, Bowen" <bowen.zhou@intel.com>]

State iasl version in Readme for MinPurley and update package maintainer information for PurleyOpenBoardPkg

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Xiaohu Zhou <bowen.zhou@intel.com>
---
 Platform/Intel/Maintainers.txt | 3 +++
 ReadMe.md                      | 1 +
 2 files changed, 4 insertions(+)

diff --git a/Platform/Intel/Maintainers.txt b/Platform/Intel/Maintainers.txt
index c59d2fd76c..7352d9ca34 100644
--- a/Platform/Intel/Maintainers.txt
+++ b/Platform/Intel/Maintainers.txt
@@ -44,3 +44,6 @@ M: Chasel Chiu <chasel.chiu@intel.com>
 MinPlatformPkg
 M: Jiewen Yao <jiewen.yao@intel.com>
 
+PurleyOpenBoardPkg
+M: Xiaohu Zhou <xiaohu.zhou@intel.com>
+
diff --git a/ReadMe.md b/ReadMe.md
index 5bcdd1da93..0634e3f543 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -50,6 +50,7 @@ For MinPurley
 4. Type "bld" to build Purley BIOS image, "bld release" for release build.
 
 The user can run FITC tool to build full image for flash (BIOS + ME + DESC). The user can also burn the BIOS image to highest part of flash region directly.
+The validated version of iasl compiler that can build MinPurley is 20180629. Older version may generate ACPI build errors. 
 
 ### Known limitations
 
-- 
2.14.3.windows.1