HV:treewide:rename vm data structure

For data structure types "struct vm", its name is identical
with variable name in the same scope. This is a MISRA C  violation.

Naming convention rule:If the data structure type is used by multi
modules, its corresponding logic resource is exposed to external
components (such as SOS, UOS), and its name meaning is simplistic
(such as vcpu, vm), its name needs prefix "acrn_".

The following udpates are made:
struct vm *vm-->struct acrn_vm *vm

Tracked-On: #861

Signed-off-by: Xiangyang Wu <xiangyang.wu@linux.intel.com>

hypervisor/debug/hypercall.c

@@ -14,7 +14,7 @@
 /**
  *@pre Pointer vm shall point to VM0
  */
-int32_t hcall_profiling_ops(struct vm *vm, uint64_t cmd, uint64_t param)
+int32_t hcall_profiling_ops(struct acrn_vm *vm, uint64_t cmd, uint64_t param)
 {
 	int32_t ret;
 	switch (cmd) {