Interface PrintHobList() is added to dump all HOBs info in the HobList.
Caller could specify a custom HOB print handler to replace the default
print handler when calling the interface.
Cc: Ray Ni <ray.ni@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Wei6 Xu <wei6.xu@intel.com>
