hv:Replace dynamic memory with static for vcpu

-- Replace dynamic memory allocation with static memory
-- Remove parameter check if vcpu is NULL

Tracked-On: #861
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Reviewed-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/arch/x86/Kconfig

@@ -34,6 +34,12 @@ config RELEASE
 
 config MAX_VM_NUM
 	int "Maximum number of VM"
+	range 1 8
+	default 4
+
+config MAX_VCPUS_PER_VM
+	int "Maximum number of VCPUS per VM"
+	range 1 8
 	default 4
 
 config NR_IOAPICS