hv: vmtrr: hide mtrr if hide_mtrr is true

Now we only configure "hide MTRR" explicitly to false for SOS. For other VMs,
we don't configure it which means hide_mtrr is false by default.
And remove global config MTRR_ENABLED

Tracked-On: #1842
Signed-off-by: Li, Fei1 <fei1.li@intel.com>

hypervisor/include/arch/x86/guest/vcpu.h

@@ -256,9 +256,7 @@ struct acrn_vcpu_arch {
 	/* per vcpu lapic */
 	struct acrn_vlapic vlapic;
 
-#ifdef CONFIG_MTRR_ENABLED
 	struct acrn_vmtrr vmtrr;
-#endif
 
 	int32_t cur_context;
 	struct cpu_context contexts[NR_WORLD];

hypervisor/include/arch/x86/guest/vm.h

@@ -221,6 +221,7 @@ void vrtc_init(struct acrn_vm *vm);
 #endif
 
 bool is_lapic_pt(const struct acrn_vm *vm);
+bool vm_hide_mtrr(const struct acrn_vm *vm);
 
 #endif /* !ASSEMBLER */