x86/encrypted-state: Add support for handling IOIO exceptions Add support for decoding and handling #VC exceptions for IOIO events. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Co-developed-by: Joerg Roedel <jroedel@suse.de> [ jroedel@suse.de: Adapted code to #VC handling framework ] Signed-off-by: Joerg Roedel <jroedel@suse.de>