einj_pcie_err: support PCIe error injection through EINJ

Support PCIe error injection, e.g. fatal error, through APEI EINJ
interface. Tested on ARM platform (Alibaba Yitian 710) and X86 platform
(Intel Sapphire Rapids).

Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
5 files changed