File ovmf-add-exclude-shell-flag.patch of Package ovmf

Index: edk2-edk2-stable202005/OvmfPkg/OvmfPkgX64.fdf
===================================================================
--- edk2-edk2-stable202005.orig/OvmfPkg/OvmfPkgX64.fdf
+++ edk2-edk2-stable202005/OvmfPkg/OvmfPkgX64.fdf
@@ -293,7 +293,9 @@ INF  MdeModulePkg/Universal/Disk/UdfDxe/
 INF  ShellPkg/DynamicCommand/TftpDynamicCommand/TftpDynamicCommand.inf
 INF  OvmfPkg/LinuxInitrdDynamicShellCommand/LinuxInitrdDynamicShellCommand.inf
 !endif
+!ifndef $(EXCLUDE_SHELL)
 INF  ShellPkg/Application/Shell/Shell.inf
+!endif
 
 INF MdeModulePkg/Logo/LogoDxe.inf