hv: fix MISRA-C issues related to for loop

This patch fixes the following issues:
- Assignment operation in expression.
- For loop incrementation is not simple.
- No brackets to loop body.
- Use of comma operator.

v1 -> v2:
 * Replace &x->y with &(x->y) based on our new coding rule

Tracked-On: #861
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>

hypervisor/common/vm_load.c

@@ -96,8 +96,9 @@ int load_guest(struct vm *vm, struct vcpu *vcpu)
 	lowmem_gpa_top = *(uint64_t *)hva;
 
 	/* hardcode vcpu entry addr(kernel entry) & rsi (zeropage)*/
-	for (i = 0; i < NUM_GPRS; i++)
+	for (i = 0; i < NUM_GPRS; i++) {
 		vcpu_set_gpreg(vcpu, i, 0UL);
+	}
 
 	hva  = GPA2HVA(vm, lowmem_gpa_top -
 			MEM_4K - MEM_2K);
@@ -169,8 +170,9 @@ int general_sw_loader(struct vm *vm, struct vcpu *vcpu)
 		/* Documentation states: ebx=0, edi=0, ebp=0, esi=ptr to
 		 * zeropage
 		 */
-		for (i = 0; i < NUM_GPRS; i++)
+		for (i = 0; i < NUM_GPRS; i++) {
 			vcpu_set_gpreg(vcpu, i, 0UL);
+		}
 
 		/* Get host-physical address for guest bootargs */
 		hva = GPA2HVA(vm,