ShellPkg: Fix ARM build errors.

submitted-by: Olivier Martin olivier.martin@arm.com>
reviewed-by: Jaben Carsey <Jaben.Carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14400 6f19259b-4bc3-4df7-8a09-765794883524
ShellBinPkg: Upadate both MinUefiShell and UefiShell for IA32 and X64 based on ShellPkg SVN 14400

Contributed-under: TianoCore Contribution Agreement 1.0
signed-off-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14401 6f19259b-4bc3-4df7-8a09-765794883524
Merge branch 'master' of https://github.com/tianocore/edk2