hv: vlapic_timer: refine vlapic tscdeadline timer

Add vlapic_create_timer/vlapic_reset_timer to setup/reset a timer.
Add vlapic_update_lvtt to disarm timer when mode changes.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/include/arch/x86/guest/guest.h

@@ -45,6 +45,17 @@
 		(idx < vm->hw.num_vcpus) & (vcpu != NULL);	\
 		idx++, vcpu = vm->hw.vcpu_array[idx])
 
+
+/* the index is matched with emulated msrs array*/
+enum {
+	IDX_TSC_DEADLINE,
+	IDX_BIOS_UPDT_TRIG,
+	IDX_BIOS_SIGN_ID,
+	IDX_TSC,
+
+	IDX_MAX_MSR
+};
+
 struct vhm_request;
 
 /*