[PATCH V3 0/6] Refactor installation of gQemuAcpiTableNotifyProtocol

["Min Xu" <min.m.xu@intel.com>]

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4237

Commit 9fdc70af6ba8 breaks log analysis and code cohesion in 
AcpiPlatformDxe. See the detailed information in BZ#4237.

This patch-set contains below patches to fix above issues.
#1: Remove QEMU_ACPI_TABLE_NOTIFY_PROTOCOL and delete
    QemuAcpiTableNotify.h.
#2: Use local variable of ChAcpiHandle to store the handle.
#3: Use local variable of QemuAcpiHandle to store the handle.
#4: Add log to show how many ACPI tables installed.
#5: Refactor the installation of QemuAcpiTableNotifyProtocol and
    its error handling.
#6: Return error code if QemuAcpiTableNotifyProtocol is failed to be
    installed so that the caller can handle the error.

Code: https://github.com/mxu9/edk2/tree/AcpiPlatformDxe.v3

v3 changes:
 - Set QemuAcpiHandle to NULL right before installing the
   gQemuAcpiTableNotifyProtocol.

v2 changes:
 - Split v1 patch into 6 separate patches.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Sebastien Boeuf <sebastien.boeuf@intel.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>

Min M Xu (6):
  OvmfPkg/AcpiPlatformDxe: Remove QEMU_ACPI_TABLE_NOTIFY_PROTOCOL
  OvmfPkg/AcpiPlatformDxe: Use local variable in CloudHvAcpi.c
  OvmfPkg/AcpiPlatformDxe: Use local variable in QemuFwCfgAcpi.c
  OvmfPkg/AcpiPlatformDxe: Add log to show the installed tables
  OvmfPkg/AcpiPlatformDxe: Refactor QemuAcpiTableNotifyProtocol
  OvmfPkg/AcpiPlatformDxe: Return error if installing NotifyProtocol
    failed

 OvmfPkg/AcpiPlatformDxe/CloudHvAcpi.c         | 23 +++++-----
 OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c       | 43 ++++++++++++-------
 .../Include/Protocol/QemuAcpiTableNotify.h    | 27 ------------
 3 files changed, 40 insertions(+), 53 deletions(-)
 delete mode 100644 OvmfPkg/Include/Protocol/QemuAcpiTableNotify.h

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2.29.2.windows.2