hv:Revise sanitized page size

now the size of sanitized_page is 32KB,
revise it to 4KB.

Tracked-On: #1842
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>

Author: mingqiangchi

hypervisor/arch/x86/mmu.c

@@ -31,7 +31,7 @@
 #include <reloc.h>
 
 static void *ppt_mmu_pml4_addr;
-static void *sanitized_page[CPU_PAGE_SIZE];
+static uint8_t sanitized_page[PAGE_SIZE] __aligned(PAGE_SIZE);
 
 static struct vmx_capability {
 	uint32_t ept;