ACRN IVSHMEM follows QEMU IVSHMEM spec. IVSHMEM supports MSIx interrupt
for doorbell mode. The document of ivshmem high level design is
out-of-date. This patch update the mmio register definition of doorbell
mode support.
Tracked-On: #5407
Signed-off-by: Jiayuan Yang <jiayuan.yang@intel.com>
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
8c8dfdca9a