x86/mm/ioremap: Fix HUGE_VMAP interface redefinition

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4EUVI
CVE: NA

--------------------------------------------------

arch_vmap_p4d_supported arch_vmap_pud_supported arch_vmap_pmd_supported
redefined when disable CONFIG_HAVE_ARCH_HUGE_VMAP on x86.

Fixes: 396a313c1a6a ("mm: HUGE_VMAP arch support cleanup")
Signed-off-by: NFang Lijun <fanglijun3@huawei.com>
Reviewed-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/x86/mm/ioremap.c

@@ -431,6 +431,7 @@ void iounmap(volatile void __iomem *addr)
 }
 EXPORT_SYMBOL(iounmap);
 
+#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
 bool arch_vmap_p4d_supported(pgprot_t prot)
 {
 	return false;
@@ -449,6 +450,7 @@ bool arch_vmap_pmd_supported(pgprot_t prot)
 {
 	return boot_cpu_has(X86_FEATURE_PSE);
 }
+#endif
 
 /*
  * Convert a physical pointer to a virtual kernel pointer for /dev/mem