'hv_main()' wraps several logic which has no dependencies
each other(enable VMX, prepare to create service os VM..),
in this case, split this function to make code logic clear.
remove 'is_vm0_bsp()' & 'hv_main()'
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>