Add a new pareser for the Hardware Error Source Table (HEST).
The HEST table is used to describe a system's hardware error sources
to OSPM.
Cc: Zhichao Gao <zhichao.gao@intel.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: levi.yun <yeoreum.yun@arm.com>
f96298d75c