Maintainers: refresh the OVMF SEV subsystem after TianoCore #2198 and #3077

Maintainers: refresh the OVMF SEV subsystem after TianoCore #2198 and #3077

Tom added initial SEV-ES support (tracked under TianoCore#2198) in commit
range 7f7f511c5a74..7f0b28415cb4. The last commit in that range created
the "OvmfPkg: SEV-related modules" section in "Maintainers.txt".

However, we didn't list the "OvmfPkg/ResetVector" module, which had
received significant updates, enabling QEMU to learn details about the
firmware, from parsing the flash image. The SEC phase of OVMF
("OvmfPkg/Sec") gained a new responsibility as well (#VC exception
handling). List both modules now.

James introduced the remote attested / encrypted boot OVMF platform (under
TianoCore#3077) in commit range ef3e73c6a0c0..01726b6d23d4. This work
further extended "OvmfPkg/ResetVector", and added:

  OvmfPkg/AmdSev/
  OvmfPkg/Include/Guid/ConfidentialComputingSecret.h
  OvmfPkg/Library/PlatformBootManagerLibGrub/

List these too in the "OvmfPkg: SEV-related modules" section, and
designate James as a reviewer.

Cc: Andrew Fish <afish@apple.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3077
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20210310185649.19801-2-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Brijesh Singh <brijesh.singh@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
Acked-by: Leif Lindholm <leif@nuviainc.com>
Acked-by: James Bottomley <jejb@linux.ibm.com>
Acked-by: Min Xu <min.m.xu@intel.com>