ShellPkg: Add Type 5 PCC Subspace Structure parser

ShellPkg: Add Type 5 PCC Subspace Structure parser

Bugzilla: 3563 (https://bugzilla.tianocore.org/show_bug.cgi?id=3563)

Update the Acpiview PCCT parser with the HW Registers based
Communications Subspace Structure (Type 5) as defined in Section 14.1.7
of the ACPI 6.4 specification.

Signed-off-by: Chris Jones <christopher.jones@arm.com>
Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar <sami.mujawar@arm.com>