arch, pci, vmm: Initial switch to the hypervisor crate

Start moving the vmm, arch and pci crates to being hypervisor agnostic
by using the hypervisor trait and abstractions. This is not a complete
switch and there are still some remaining KVM dependencies.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

vmm/Cargo.toml

@@ -20,8 +20,7 @@ anyhow = "1.0"
 arch = { path = "../arch" }
 devices = { path = "../devices" }
 epoll = ">=4.0.1"
-kvm-bindings = { git = "https://github.com/cloud-hypervisor/kvm-bindings", branch = "ch", features = ["with-serde", "fam-wrappers"] }
-kvm-ioctls = { git = "https://github.com/cloud-hypervisor/kvm-ioctls", branch = "ch" }
+hypervisor = { path = "../hypervisor" }
 lazy_static = "1.4.0"
 libc = "0.2.71"
 log = "0.4.8"
@@ -44,6 +43,7 @@ vmm-sys-util = { version = ">=0.5.0", features = ["with-serde"] }
 signal-hook = "0.1.15"
 tempfile = "3.1.0"
 
+
 [dependencies.linux-loader]
 git = "https://github.com/rust-vmm/linux-loader"
 features = ["elf", "bzimage", "pe"]