ovmf: fix CVE-2024-38797

ovmf: fix CVE-2024-38797

According to [1]:

EDK2 contains a vulnerability in the HashPeImageByType(). A user may cause a read out of
bounds when a corrupted data pointer and length are sent via an adjecent network.
A successful exploit of this vulnerability may lead to a loss of Integrity and/or
Availability.

Backport fixes from upstream edk2 [2][3]

[1] https://nvd.nist.gov/vuln/detail/CVE-2024-38797
[2] https://github.com/tianocore/edk2/security/advisories/GHSA-4wjw-6xmf-44xf
[3] https://github.com/tianocore/edk2/pull/10928

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>