MdeModulePkg build fails for AARCH64 on Ubuntu 22.04

["Rebecca Cran" <rebecca@bsdio.com>]

I noticed that MdeModulePkg fails to build on my Ubuntu 22.04 system 
(and previously on the Ubuntu 20.04 installation). Is this a known bug?

It shouldn't be relevant, but I'm using gcc version 11.2.0 (Ubuntu 
11.2.0-17ubuntu1). But perhaps more relevant, I'm using Python 3.10.4.

I'm trying to build commit e2ac68a23b4954d5c0399913a1df3dd9fd90315d.


bcran@photon:~/src/tmp/edk2$ build -p MdeModulePkg/MdeModulePkg.dsc -a 
AARCH64 -t GCC5 -b RELEASE
Build environment: Linux-5.15.0-46-generic-x86_64-with-glibc2.35
Build start time: 22:29:18, Aug.20 2022

WORKSPACE        = /home/bcran/src/tmp/edk2
EDK_TOOLS_PATH   = /home/bcran/src/tmp/edk2/BaseTools
CONF_PATH        = /home/bcran/src/tmp/edk2/Conf
PYTHON_COMMAND   = /usr/bin/python3


Processing meta-data
.Architecture(s)  = AARCH64
Build target     = RELEASE
Toolchain        = GCC5

Active Platform          = 
/home/bcran/src/tmp/edk2/MdeModulePkg/MdeModulePkg.dsc


build.py...
/home/bcran/src/tmp/edk2/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.inf(42): 
error 3000: PCD 
[gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode] in 
[/home/bcran/src/tmp/edk2/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.inf] 
is not found in dependent packages:
                 /home/bcran/src/tmp/edk2/MdePkg/MdePkg.dec
         /home/bcran/src/tmp/edk2/MdeModulePkg/MdeModulePkg.dec


- Failed -
Build end time: 22:29:19, Aug.20 2022
Build total time: 00:00:01