refine hypercall

-- use an array to fast locate the hypercall handler
   to replace switch case.
-- uniform hypercall handler as below:
   int32_t (*handler)(sos_vm, target_vm, param1, param2)

Tracked-On: #4958
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/include/public/acrn_hv_defs.h

@@ -20,6 +20,7 @@
  */
 
 #define BASE_HC_ID(x, y) (((x)<<24U)|(y))
+#define HC_IDX(id) ((id)&(0xFFUL))
 
 #define HC_ID 0x80UL