Maintainers.txt: Update maintainers list

- Add two entries of MdePkg and MdeModulePkg for
  manageability modules and files.
- Add one entry of UefiCpuPkg AMD related files.

Signed-off-by: Abner Chang <abner.chang@amd.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
Cc: Nickle Wang <nicklew@nvidia.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20231019054328.427-2-abner.chang@amd.com>
Acked-by: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
Acked-by: Nickle Wang <nicklew@nvidia.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

Maintainers.txt

@@ -439,6 +439,13 @@ F: MdeModulePkg/Include/Protocol/UsbEthernetProtocol.h
 M: Richard Ho <richardho@ami.com> [richardho]
 R: Rebecca Cran <rebecca@bsdio.com> [bcran]
 
+MdeModulePkg: Manageability modules
+F: MdeModulePkg/Include/*Ipmi*.*
+F: MdeModulePkg/Library/*Ipmi*.*
+M: Abner Chang <abner.chang@amd.com> [changab]
+R: Abdul Lateef Attar <AbdulLateef.Attar@amd.com> [abdattar]
+R: Nickle Wang <nicklew@nvidia.com> [nicklela]
+
 MdePkg
 F: MdePkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/MdePkg
@@ -464,6 +471,14 @@ R: Gua Guo <gua.guo@intel.com> [gguo11837463]
 R: Chasel Chiu <chasel.chiu@intel.com> [ChaselChiu]
 R: James Lu <james.lu@intel.com> [jameslu8]
 
+MdePkg: Manageability industryStandard standard C header files
+F: MdePkg/Include/IndustryStandard/*Ipmi*.h
+F: MdePkg/Include/IndustryStandard/*Mctp*.h
+F: MdePkg/Include/IndustryStandard/*Pldm*.h
+M: Abner Chang <abner.chang@amd.com> [changab]
+R: Abdul Lateef Attar <AbdulLateef.Attar@amd.com> [abdattar]
+R: Nickle Wang <nicklew@nvidia.com> [nicklela]
+
 NetworkPkg
 F: NetworkPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/NetworkPkg
@@ -653,6 +668,12 @@ F: UefiCpuPkg/ResetVector/
 R: Debkumar De <debkumar.de@intel.com> [dde01]
 R: Catharine West <catharine.west@intel.com> [catharine-intl]
 
+UefiCpuPkg: AMD related files
+F: UefiCpuPkg/Library/MmSaveStateLib/*Amd*.*
+F: UefiCpuPkg/Library/SmmCpuFeaturesLib/*Amd*.*
+M: Abdul Lateef Attar <AbdulLateef.Attar@amd.com> [abdattar]
+R: Abner Chang <abner.chang@amd.com> [changab]
+
 UefiPayloadPkg
 F: UefiPayloadPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/UefiPayloadPkg