PCI/ROM: Fix PCI ROM header check bug

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IAEDJI



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In UEFI Specification Version 2.8, describes that the PCIR data structure
 must start on a 4-byte boundary. Add checks to prevent vulnerabilities.

Fixes: d7ad2254 ("[IA64] SN: Correct ROM resource length for BIOS copy")
Signed-off-by: liwei <liwei728@huawei.com>